3G演进

出版时间:2010-1   出版时间:人民邮电出版社   作者:Erik Dahlman,Stefan Parkvall,Johan Skold   页数:608  
封面图片

3G演进
前言

  During the past years, there has been a quickly rising interest in radio access tech- nologies for providing mobile as well as nomadic and fixed services for voice, video, and data. The difference in design, implementation, and use between telecom and data com technologies is also getting more blurred. One example is cellular technologies from the telecom world being used for broadband data and wireless LAN from the data com world being used for voice over IP.  Today, the most widespread radio access technology for mobile communication is digital cellular, with the number of users passing 3 billion by 2007, which is almost half of the worlds population. It has emerged from early deployments of an expensive voice service for a few car-borne users, to todays widespread use of third generation mobile-communication devices that provide a range of mobile services and often include camera, MP3 player, and PDA functions. With this widespread use and increasing interest in 3G, a continuing evolution ahead is foreseen.  This book describes the evolution of 3G digital cellular into an advanced broadband mobile access. The focus of this book is on the evolution of the 3G mobile communication as developed in the 3GPP (Third Generation Partnership Project) standardization, looking at the radio access and access network evolution.  This book is divided into five parts. Part I gives the background to 3G and its evolution, looking also at the different standards bodies and organizations involved in the process of defining 3G. It is followed by a discussion of the rea- sons and driving forces behind the 3G evolution. Part II gives a deeper insight into some of the technologies that are included, or are expected to be included as part of the 3G evolution. Because of its generic nature, Part II can be used as a background not only for the evolution steps taken in 3GPP as described in this book, but also for readers that want to understand the technology behind other systems, such as WiMAX and CDMA2000.
内容概要

  《3G演进:HSPA与LTE(英文版.第2版)》是爱立信研究院研发人员的经验之谈,描述了3G数字蜂窝系统如何演进成为先进的宽带移动接入技术,重点介绍了3G移动通信标准化开发演进路线、无线接入技术和接入网络的演进。书中内容分为5部分,清晰地勾勒出了3G演进技术取舍的诸多细节。  《3G演进:HSPA与LTE(英文版.第2版)》是移动通信行业技术人员的必备参考指南,也是高等院校通信专业师生不可多得的教学参考书。
作者简介

  Erik Dahlman博士,世界知名移动通信技术专家,爱立信研究院资深研究员,毕业于瑞典皇家工学院。早期从事WCDMA的3G移动通信技术的研发和标准制定工作,后来成为3GPP项目成员,目前主要负责WCDMA R5的标准化工作以及下一代手机系统的无线接入研究工作。他在无线通信领域拥有20多项专利,由于工作业绩突出,曾荣获IEEE运载工具技术学会授予的Jack Neubauer奖以及爱立信研究院授予的年度发明家奖。
书籍目录

Part
Ⅰ:
Introduction1 Background
of
3G
evolution 31.1 History
and
background
of
3G 31.1.1 Before
3G 31.1.2 Early
3G
discussions 51.1.3 Research
on
3G 61.1.4 3G
standardization
starts 71.2 Standardization 71.2.1 The
standardization
process 71.2.2 3GPP 91.2.3 IMT-2000
activities
in
ITU 111.3 Spectrum
for
3G
and
systems
beyond
3G 132 The
motives
behind
the
3G
evolution 152.1 Driving
forces 152.1.1 Technology
advancements 162.1.2 Services 172.1.3 Cost
and
performance 202.2 3G
evolution:
Two
Radio
Access
Network
approaches
and
an
evolved
core
network 212.2.1 Radio
Access
Network
evolution 212.2.2 An
evolved
core
network:
system
architecture
evolution 24Part
Ⅱ:
Technologies
for
3G
Evolution3 High
data
rates
in
mobile
communication 293.1 High
data
rates:
Fundamental
constraints 293.1.1 High
data
rates
in
noise-limited
scenarios 313.1.2 Higher
data
rates
in
interference-limited
scenarios 333.2 Higher
data
rates
within
a
limited
bandwidth:
Higher-order
modulation 343.2.1 Higher-order
modulation
in
combination
with
channel
coding 353.2.2 Variations
in
instantaneous
transmit
power 363.3 Wider
bandwidth
including
multi-carrier
transmission 373.3.1 Multi-carrier
transmission 404 OFDM
transmission 434.1 Basic
principles
of
OFDM 434.2 OFDM
demodulation 464.3 OFDM
implementation
using
IFFT/FFT
processing 464.4 Cyclic-prefix
insertion 484.5 Frequency-domain
model
of
OFDM
transmission 514.6 Channel
estimation
and
reference
symbols 524.7 Frequency
diversity
with
OFDM:
Importance
of
channel
coding 534.8 Selection
of
basic
OFDM
parameters 554.8.1 OFDM
subcarrier
spacing 554.8.2 Number
of
subcarriers 574.8.3 Cyclic-prefix
length 584.9 Variations
in
instantaneous
transmission
power 584.10 OFDM
as
a
user-multiplexing
and
multiple-access
scheme 594.11 Multi-cell
broadcast/multicast
transmission
and
OFDM 615 Wider-band
‘single-carrier’
transmission 655.1 Equalization
against
radio-channel
frequency
selectivity 655.1.1 Time-domain
linear
equalization 665.1.2 Frequency-domain
equalization 685.1.3 Other
equalizer
strategies 715.2 Uplink
FDMA
with
flexible
bandwidth
assignment 715.3 DFT-spread
OFDM 735.3.1 Basic
principles 745.3.2 DFTS-OFDM
receiver 765.3.3 User
multiplexing
with
DFTS-OFDM 775.3.4 Distributed
DFTS-OFDM 786 Multi-antenna
techniques 816.1 Multi-antenna
configurations 816.2 Benefits
of
multi-antenna
techniques 826.3 Multiple
receive
antennas 836.4 Multiple
transmit
antennas 886.4.1 Transmit-antenna
diversity 896.4.2 Transmitter-side
beam-forming 936.5 Spatial
multiplexing 966.5.1 Basic
principles 976.5.2 Pre-coder-based
spatial
multiplexing 1006.5.3 Non-linear
receiver
processing 1027 Scheduling,
link
adaptation
and
hybrid
ARQ 1057.1 Link
adaptation:
Power
and
rate
control 1067.2 Channel-dependent
scheduling 1077.2.1 Downlink
scheduling 1087.2.2 Uplink
scheduling 1127.2.3 Link
adaptation
and
channel-dependent
scheduling
in
the
frequency
domain 1157.2.4 Acquiring
on
channel-state
information 1167.2.5 Traffic
behavior
and
scheduling 1177.3 Advanced
retransmission
schemes 1187.4 Hybrid
ARQ
with
soft
combining 120Part
Ⅲ:
HSPA8 WCDMA
evolution:
HSPA
and
MBMS 1278.1 WCDMA:
Brief
overview 1298.1.1 Overall
architecture 1298.1.2 Physical
layer 1328.1.3 Resource
handling
and
packet-data
session 1379 High-Speed
Downlink
Packet
Access 1399.1 Overview 1399.1.1 Shared-channel
transmission 1399.1.2 Channel-dependent
scheduling 1409.1.3 Rate
control
and
higher-order
modulation 1429.1.4 Hybrid
ARQ
with
soft
combining 1429.1.5 Architecture 1439.2 Details
of
HSDPA 1449.2.1 HS-DSCH:
Inclusion
of
features
in
WCDMA
Release
5 1449.2.2 MAC-hs
and
physical-layer
processing 1479.2.3 Scheduling 1499.2.4 Rate
control 1509.2.5 Hybrid
ARQ
with
soft
combining 1549.2.6 Data
flow 1579.2.7 Resource
control
for
HS-DSCH 1599.2.8 Mobility 1609.2.9 UE
categories 1629.3 Finer
details
of
HSDPA 1629.3.1 Hybrid
ARQ
revisited:
Physical-layer
processing 1629.3.2 Interleaving
and
constellation
rearrangement 1679.3.3 Hybrid
ARQ
revisited:
Protocol
operation 1689.3.4 In-sequence
delivery 1709.3.5 MAC-hs
header 1729.3.6 CQI
and
other
means
to
assess
the
downlink
quality 1749.3.7 Downlink
control
signaling:
HS-SCCH 1779.3.8 Downlink
control
signaling:
F-DPCH 1809.3.9 Uplink
control
signaling:
HS-DPCCH 18010 Enhanced
Uplink 18510.1 Overview 18510.1.1 Scheduling 18610.1.2 Hybrid
ARQ
with
soft
combining 18810.1.3 Architecture 18910.2 Details
of
Enhanced
Uplink 19010.2.1 MAC-e
and
physical
layer
processing 19310.2.2 Scheduling 19510.2.3 E-TFC
selection 20210.2.4 Hybrid
ARQ
with
soft
combining 20310.2.5 Physical
channel
allocation 20810.2.6 Power
control 21010.2.7 Data
flow 21110.2.8 Resource
control
for
E-DCH 21210.2.9 Mobility 21310.2.10 UE
categories 21310.3 Finer
details
of
Enhanced
Uplink 21410.3.1 Scheduling
-
the
small
print 21410.3.2 Further
details
on
hybrid
ARQ
operation 22310.3.3 Control
signaling 23011 MBMS:
Multimedia
Broadcast
Multicast
Services 23911.1 Overview 24211.1.1 Macro-diversity 24311.1.2 Application-level
coding 24511.2 Details
of
MBMS 24611.2.1 MTCH 24711.2.2 MCCH
and
MICH 24711.2.3 MSCH 24912 HSPA
Evolution 25112.1 MIMO 25112.1.1 HSDPA-MIMO
data
transmission 25212.1.2 Rate
control
for
HSDPA-MIMO 25612.1.3 Hybrid-ARQ
with
soft
combining
for
HSDPA-MIMO 25612.1.4 Control
signaling
for
HSDPA-MIMO 25712.1.5 UE
capabilities 25912.2 Higher-order
modulation. 25912.3 Continuous
packet
connectivity 26012.3.1 DTX–reducing
uplink
overhead 26112.3.2 DRX–reducing
UE
power
consumption 26412.3.3 HS-SCCH-less
operation:
downlink
overhead
reduction 26512.3.4 Control
signaling 26712.4 Enhanced
CELL_FACH
operation 26712.5 Layer
2
protocol
enhancements 26912.6 Advanced
receivers 27012.6.1 Advanced
UE
receivers
specified
in
3GPP 27112.6.2 Receiver
diversity
(type
1) 27112.6.3 Chip-level
equalizers
and
similar
receivers
(type
2) 27212.6.4 Combination
with
antenna
diversity
(type
3) 27312.6.5 Combination
with
antenna
diversity
and
interference
cancellation
(type
3i) 27412.7 MBSFN
operation 27512.8 Conclusion 275Part
Ⅳ:
LTE
and
SAE13 LTE
and
SAE:
Introduction
and
design
targets 27913.1 LTE
design
targets 28013.1.1 Capabilities 28113.1.2 System
performance 28213.1.3 Deployment-related
aspects 28313.1.4 Architecture
and
migration 28513.1.5 Radio
resource
management 28613.1.6 Complexity 28613.1.7 General
aspects 28613.2 SAE
design
targets 28714 LTE
radio
access:
An
overview 28914.1 LTE
transmission
schemes:
Downlink
OFDM
and
uplink
DFTS-OFDM/SC-FDMA 28914.2 Channel-dependent
scheduling
and
rate
adaptation 29114.2.1 Downlink
scheduling 29214.2.2 Uplink
scheduling 29214.2.3 Inter-cell
interference
coordination 29314.3 Hybrid
ARQ
with
soft
combining 29414.4 Multiple
antenna
support 29414.5 Multicast
and
broadcast
support 29514.6 Spectrum
flexibility 29614.6.1 Flexibility
in
duplex
arrangement 29614.6.2 Flexibility
in
frequency-band-of-operation 29714.6.3 Bandwidth
flexibility 29715 LTE
radio
interface
architecture 29915.1 Radio
link
control 30115.2 Medium
access
control 30215.2.1 Logical
channels
and
transport
channels 30315.2.2 Scheduling 30515.2.3 Hybrid
ARQ
with
soft
combining 30815.3 Physical
layer 31115.4 Terminal
states 31415.5 Data
flow 31516 Downlink
transmission
scheme 31716.1 Overall
time-domain
structure
and
duplex
alternatives 31716.2 The
downlink
physical
resource 31916.3 Downlink
reference
signals 32416.3.1 Cell-specific
downlink
reference
signals 32516.3.2 UE-specific
reference
signals 32816.4 Downlink
L1/L2
control
signaling 33016.4.1 Physical
Control
Format
Indicator
Channel 33216.4.2 Physical
Hybrid-ARQ
Indicator
Channel 33416.4.3 Physical
Downlink
Control
Channel 33816.4.4 Downlink
scheduling
assignment 34016.4.5 Uplink
scheduling
grants 34816.4.6 Power-control
commands 35216.4.7 PDCCH
processing 35216.4.8 Blind
decoding
of
PDCCHs 35716.5 Downlink
transport-channel
processing 36116.5.1 CRC
insertion
per
transport
block 36116.5.2 Code-block
segmentation
and
per-code-block
CRC
insertion 36216.5.3 Turbo
coding 36316.5.4 Rate-matching
and
physical-layer
hybrid-ARQ
functionality 36516.5.5 Bit-level
scrambling 36616.5.6 Data
modulation 36616.5.7 Antenna
mapping 36716.5.8 Resource-block
mapping 36716.6 Multi-antenna
transmission 37116.6.1 Transmit
diversity 37216.6.2 Spatial
multiplexing 37316.6.3 General
beam-forming 37716.7 MBSFN
transmission
and
MCH 37817 Uplink
transmission
scheme 38317.1 The
uplink
physical
resource 38317.2 Uplink
reference
signals 38517.2.1 Uplink
demodulation
reference
signals 38517.2.2 Uplink
sounding
reference
signals 39317.3 Uplink
L1/L2
control
signaling 39617.3.1 Uplink
L1/L2
control
signaling
on
PUCCH 39817.3.2 Uplink
L1/L2
control
signaling
on
PUSCH 41117.4 Uplink
transport-channel
processing 41317.5 PUSCH
frequency
hopping 41517.5.1 Hopping
based
on
cell-specific
hopping/mirroring
patterns 41617.5.2 Hopping
based
on
explicit
hopping
information 41818 LTE
access
procedures 42118.1 Acquisition
and
cell
search 42118.1.1 Overview
of
LTE
cell
search 42118.1.2 PSS
structure 42418.1.3 SSS
structure 42418.2 System
information 42518.2.1 MIB
and
BCH
transmission 42618.2.2 System-Information
Blocks 42918.3 Random
access 43218.3.1 Step
1:
Random-access
preamble
transmission 43418.3.2 Step
2:
Random-access
response 44118.3.3 Step
3:
Terminal
identification 44218.3.4 Step
4:
Contention
resolution 44318.4 Paging 44419 LTE
transmission
procedures 44719.1 RLC
and
hybrid-ARQ
protocol
operation 44719.1.1 Hybrid-ARQ
with
soft
combining 44819.1.2 Radio-link
control 45919.2 Scheduling
and
rate
adaptation 46519.2.1 Downlink
scheduling 46719.2.2 Uplink
scheduling 47019.2.3 Semi-persistent
scheduling 47619.2.4 Scheduling
for
half-duplex
FDD 47819.2.5 Channel-status
reporting 47919.3 Uplink
power
control 48219.3.1 Power
control
for
PUCCH 48219.3.2 Power
control
for
PUSCH 48519.3.3 Power
control
for
SRS 48819.4 Discontinuous
reception
(DRX) 48819.5 Uplink
timing
alignment 49019.6 UE
categories 49520 Flexible
bandwidth
in
LTE 49720.1 Spectrum
for
LTE 49720.1.1 Frequency
bands
for
LTE 49820.1.2 New
frequency
bands 50120.2 Flexible
spectrum
use 50220.3 Flexible
channel
bandwidth
operation 50320.4 Requirements
to
support
flexible
bandwidth 50520.4.1 RF
requirements
for
LTE 50520.4.2 Regional
requirements 50620.4.3 BS
transmitter
requirements 50720.4.4 BS
receiver
requirements 51120.4.5 Terminal
transmitter
requirements 51420.4.6 Terminal
receiver
requirements 51521 System
Architecture
Evolution 51721.1 Functional
split
between
radio
access
network
and
core
network 51821.1.1 Functional
split
between
WCDMA/HSPA
radio
access
network
and
core
network 51821.1.2 Functional
split
between
LTE
RAN
and
core
network 51921.2 HSPA/WCDMA
and
LTE
radio
access
network 52021.2.1 WCDMA/HSPA
radio
access
network 52121.2.2 LTE
radio
access
network 52621.3 Core
network
architecture 52821.3.1 GSM
core
network
used
for
WCDMA/HSPA 52921.3.2 The
‘SAE’
core
network:
The
Evolved
Packet
Core 53321.3.3 WCDMA/HSPA
connected
to
Evolved
Packet
Core 53621.3.4 Non-3GPP
access
connected
to
Evolved
Packet
Core 53722 LTE-Advanced 53922.1 IMT-2000
development 53922.2 LTE-Advanced

The
3GPP
candidate
for
IMT-Advanced 54022.2.1 Fundamental
requirements
for
LTE-Advanced 54122.2.2 Extended
requirements
beyond
ITU
requirements 54222.3 Technical
components
of
LTE-Advanced 54222.3.1 Wider
bandwidth
and
carrier
aggregation 54322.3.2 Extended
multi-antenna
solutions 54422.3.3 Advanced
repeaters
and
relaying
functionality 54522.4 Conclusion 546Part
Ⅴ:
Performance
and
Concluding
Remarks23 Performance
of
3G
evolution 54923.1 Performance
assessment 54923.1.1 End-user
perspective
of
performance 55023.1.2 Operator
perspective 55223.2 Performance
in
terms
of
peak
data
rates 55223.3 Performance
evaluation
of
3G
evolution 55323.3.1 Models
and
assumptions 55323.3.2 Performance
numbers
for
LTE
with
5
MHz
FDD
carriers 55523.4 Evaluation
of
LTE
in
3GPP 55723.4.1 LTE
performance
requirements 55723.4.2 LTE
performance
evaluation 55923.4.3 Performance
of
LTE
with
20
MHz
FDD
carrier 56023.5 Conclusion 56024 Other
wireless
communications
systems 56324.1 UTRA
TDD 56324.2 TD-SCDMA
(low
chip
rate
UTRA
TDD) 56524.3 CDMA2000 56624.3.1 CDMA2000
1x 56724.3.2 1x
EV-DO
Rev
0 56724.3.3 1x
EV-DO
Rev
A 56824.3.4 1x
EV-DO
Rev
B 56924.3.5 UMB
(1x
EV-DO
Rev
C) 57124.4 GSM/EDGE 57324.4.1 Objectives
for
the
GSM/EDGE
evolution 57324.4.2 Dual-antenna
terminals 57524.4.3 Multi-carrier
EDGE 57524.4.4 Reduced
TTI
and
fast
feedback 57624.4.5 Improved
modulation
and
coding 57724.4.6 Higher
symbol
rates 57724.5 WiMAX
(IEEE
802.16) 57824.5.1 Spectrum,
bandwidth
options
and
duplexing
arrangement 58024.5.2 Scalable
OFDMA 58124.5.3 TDD
frame
structure 58124.5.4 Modulation,
coding
and
Hybrid
ARQ 58124.5.5 Quality-of-service
handling 58224.5.6 Mobility 58324.5.7 Multi-antenna
technologies 58424.5.8 Fractional
frequency
reuse 58424.5.9 Advanced
Air
Interface
(IEEE
802.16m) 58524.6 Mobile
Broadband
Wireless
Access
(IEEE
802.20) 58624.7 Summary 58825 Future
evolution 58925.1 IMT-Advanced 59025.2 The
research
community 59125.3 Standardization
bodies 59125.4 Concluding
remarks 592References 593Index 603

章节摘录

  The
size
and
weight
of
the
mobile
terminals
have
been
reduced
dramatically
during
the
past
20
years.
The
standby
and
talk
times
have
also
been
extended
dramatically
and
the
end
users
do
not
need
to
re-charge
their
devices
every
day.
Simple
black-and-white
(or
brown-and-gray)
numerical
screens
have
evolved
into
color
screens
capable
of
showing
digital
photos
at
good
quality.
Mega-
pixel-capable
digital
cameras
have
been
added
making
the
device
more
attractive
to
use.
Thus,
the
mobile
device
has
become
a
multi-purpose
device,
not
only
a
mobile
phone
for
voice
communications.  In
parallel
to
the
technical
development
of
the
mobile
devices,
the
mobile-
communication
technologies
are
developed
to
meet
the
demands
of
the
new
serv-
ices
enabled,
and
also
to
enable
them
wireless.
The
development
of
the
digital
signal
processors
enables
more
advanced
receivers
capable
of
processing
mega-
bits
of
data
in
a
short
time,
and
the
introduction
of
the
optical
fibers
enables
high-speed
network
connections
to
the
base
stations.
In
sum,
this
enables
a
fast
access
to
information
on
the
Internet
as
well
as
a
short
roundtrip
time
for
normal
communications.
Thus,
new
and
fancier
services
are
enabled
by
the
technical
development
of
the
devices,
and
new
and
more
efficient
mobile-communication
systems
are
enabled
by
a
similar
technical
development.  2.1.2
Services
Delivering
services
to
the
end
users
is
the
fundamental
goal
of
any
mobile-
communication
system.
Knowing
them,
understanding
them,
managing
them,
and
charging
them
properly
is
the
key
for
success.
It
is
also
the
most
difficult
task
being
faced
by
the
engineers
developing
the
mobile-communication
system
of
the
future.
It
is
very
difficult
to
predict
what
service(s)
will
be
popular
in
a
5-
to
10-year
perspective.
In
fact,
the
engineers
have
to
design
a
system
that
can
adapt
to
any
service
that
might
become
popular
and
used
in
the
future.
Unfortunately,
there
are
also
technical
limitations
that
need
to
be
understood,
and
also
the
tech-
nical
innovations
that
in
the
future
enable
new
services.  2.1.2.1 Internet
and
IP
technology
The
success
of
the
Internet
and
the
IP-based
services
delivered
over
the
Internet
is
more
and
more
going
wireless.
This
means
that
the
mobile-communication
systems
are
delivering
more
and
more
IP-based
services,
from
the
best
effort-
Internet
data
to
voice-over-IP,
for
example
in
the
shape
of
push-to-ta  k
(PoC).
Furthermore,
in
the
wireless
environment
it
is
more
natural
to
use,
for
exam-
ple,
location-based
services
and
tracking
services
than
in
the
fixed
environment.
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  “如果你打算学习HSPA与LTE,本书无疑是最佳参考指南,因为作者不但是通信技术高手,而且知道怎么让你也成为技术高手。”  ——Joel Schopp,IBM工程师  “这是迄今为止最系统的甚至可以说最优秀的移动通信技术演进资料!我这么评价它毫不夸张,因为它详尽介绍了4G之路该如何走。”  ——Amazon.com
编辑推荐

  飞速发展的移动通信技术如何演进不但给各大运营商、设备厂商带来了挑战,也成为横亘在网络工程人员面前的巨大课题,如何应用新技术以保证自己在竞争中立于不败之地,是通信工程师们必须认真思考的问题。  《3G演进:HSPA与LTE(英文版.第2版)》是爱立信研究院工程师们的经验结晶,探讨诸多3GPP标准细节,清晰地勾勒出了如何在各种移动通信演进技术之间进行取舍,准确体现了作者在把握技术演进方向上的前瞻意识。与许多只是阐述标准的同类书不同,《3G演进:HSPA与LTE(英文版.第2版)》内容均来自一线实战,很多资料都是首次公开。全书内容分为五个部分,重在介绍3.5G和4G移动通信标准化开发的路线,关注无线接入技术和接入网络的演进,主要知识点包括:3.5G和4G系统及其发展背景;3.5G和4G涉及的具体技术,如高速数据传输、OFDM传输、多天线技术等;HSPA;LTE和SAE;系统性能评估。《3G演进:HSPA与LTE(英文版.第2版)》将使你更深入地理解3.5G和4G技术,自信应对未来通信技术挑战。

图书标签Tags

通信,LTE,混口饭吃,移动通信,学习,communication
评论、阅读与下载



3G演进下载



相关评论与评分
  •     关于OPC的书籍市面上很少,值得大家看一看
  •     纸质不咋滴,写得还比较易懂
  •     习题解答的过程都很详细
    可以当作例题用,书还是一如既往的很好
  •     很厚实,就拿他看普通话了
  •     南安通信推荐书籍,这是一本经典著作
  •     就是没有时间看。,不知道怎么样
  •     都蛮好的,老师推荐
  •     感觉考虑买科学出版社的之前应该斟酌再三,结合当前的通信发展!
  •     工作需要,有很多知识有待学习
  •     通俗易懂。,内容和书名不太一致
  •     公式不多,应该还行吧
  •     下午四点多下了订单,内容实用
  •     但包装简陋,书编写的比较详细
  •     融合了管理学和通信的相关知识,字好小啊
  •     还是很有质量的,但是内容有点难度
  •     内容很全,不是我想要的内容。
  •     讲解很全面。,书里面夹有不少灰尘
  •     这是一本音响方面的培训教材,书的质量很好!
  •     简单阅读后,东西很不错
  •     挺不错的书,内容平易近人
 

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