mobile radio comms book ver2 sample chapters

8/8/2019 Mobile Radio Comms Book Ver2 Sample Chapters

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Chapter9


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MOBILITY

DATARATE

UMTS

2.

GENER.

GSM,

IS-54

ISDN

MBS

CORDLESS

FIXED

PORTABLE

MOBILE

WLAN

B-ISDN


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Search Area

n-1 fnf

b x b

p x qMCER

Position of the best match

-


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pensation

Multi-Class

DCT

Local Recon-

struction

compression

Table-

Table-

compression

Motion Com-

Modem

Camera

IntraCodec

Inter Codec

Modem

Cost / Gain Estimationand Bitrate Control

QuantiserBlock

Averaging

-


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10 20 30 40 50 60 70 80 90 100

Frame Index

26

28

30

32

34

36

PSNR(dB)

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DCT-1

Quant-1

LoopFilter

MotionEstimation

Quant

VideoMultiplex

Coder

CodingControl

CurrentFrame

0

1

0

1

DCTQuantised Coefficients

M

otionVector

FrameMemory

MotionCompensation

Quantiser Index

0

INTRA/INTER mode

Multiplexer

Multiplexer

Prediction Error

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-

-

-


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b = 2 (00)

b = 2 (01)

b = 2 (10)

b = 2 (11)

b = 1 ( 0 )

b = 1 ( 1 )

0

-1

-2-3

+4

+3

+2+1

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Differential vector

Relativefrequency

0

0.1

0.2

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0.4

0.5

0.6

-3 -2 -1 0 1 2 3 4

English

Chinese

Map

Drawing

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X Y SV FV FV FVFVo o

VC

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Q

I

d

d2

1

1 2A A


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$RCSfile: q1a.gle,v $

PDF

P(y/x1) P(y/x2)

T0X1 X2y0 y1

P(y0/X1)

P(y0/X2)

P(y1/X2)

P(y1/X1)

$RCSfile: q1b.gle,v $

-3 -2 -1 0 1 2 3y

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Q(

y)

Q-Function


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0 5 10 15 20 25 30Channel SNR (dB)

10-6

10-5

10-4

10-3

10-2

10-1

100

BER

0 5 10 15 20 25 30

64 point QAM C3 simulation





QPSK simulation

BPSK simulation64 point QAM C3 theory

64 point QAM C2 theory

64 point QAM C1 theory

16 point QAM C2theory

16 point QAM C1theory

QPSK theory

BPSK theory

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LowPassInterpolationat20dBEb

/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)

PolynomialInterpolationat20dBEb/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)

OptimumInterpolationat20dBEb/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

1001

20

Gap

0.0

10.111

0BER(%)


/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

1001

20

Gap

0.0

10.111

0BER(%)


/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

1001

20

Gap

0.0

10.111

0BER(%)

16SquareQAM

LinearInterpolationat20dBEb/N0

3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)

16SquareQAM


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)

16SquareQAM


3

4

5

6

7

8

91

011

Buff

er

20

40

60

80

100

120

Gap

0.0

10.111

0BER(%)

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1.0 2.0 3.0 4.0

Bits Per Symbol

10-4

2

5

10-3

2

5

10 -2

2

5

10-1

2

5

10 0

2

BER(%)

Comparison of Coherent and non Coherent Detection

40dB

30dB

20dB

40dB dif

30dB dif

20dB dif

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0 5 10 15 20 25 30 35 40 45 50

Average Channel SNR

10-5

2

5

10-4

2

510

-3

2

5

10-2

2

5

10-1

BitErrorRate

0 5 10 15 20 25 30 35 40 45 500

1

2

3

4

5

6

B

PS

Data

Speech

BPS

BER

-


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0 5 10 15 20 25 30 35 40 45

Average channel SNR (dB)

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Probability QAM 64

QAM 16

QPSK

BPSK

NoTx

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bit range

percentage

oftraces

0

0.05

0.1

0.15

0.2

0.25

20 30 40 50 60 70 80 90 100 1 10 120 1 30 1 40 1 50 1 60 1 70 1 80 1 90 2 00

FL-DCC(b=1)

FL-DCC(b=2)

DCC(M=8)

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packet length

percentage

ofincrease

0

20

40

60

80

100

120

50 70 90 110 130 150 170 190 210 230 250

English

Chinese

Map

Drawing

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h261-h263-compare-gaussian.gle

0 5 10 15 20 25 30

Channel SNR (dB)

30

32

34

36

38

40

42

Aver

agePSNR(dB)

H.261

H.263 64 QAM(AWGN)

16 QAM(AWGN)

4 QAM(AWGN)64 QAM(AWGN)

16 QAM(AWGN)

4 QAM(AWGN)

-


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h261-h263-compare-rayleigh.gle

5 10 15 20 25 30

Channel SNR (dB)

30

32

34

36

38

40

42

Aver

agePSNR(dB)

H.261

H.263 64 QAM(Rayleigh)

16 QAM(Rayleigh)

4 QAM(Rayleigh)

64 QAM(Rayleigh)

16 QAM(Rayleigh)

4 QAM(Rayleigh)

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Chapter10

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1980

MS

2010

W-CDMA

(TDD)

W-CDMA

Uplink

(FDD)

1900 1920

W-CDMA

(TDD)

2170

W-CDMA

Downlink

(FDD)

21102025

Frequency (MHz)

MS : Mobile satellite application

MS

2200

1980

MS

2010

W-CDMA

Uplink

(FDD)

1920

W-CDMA

(TDD)

2170

W-CDMA

Downlink

(FDD)

21102025

MS

2200

MS : Mobile satellite application

Frequency (MHz)

-


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Base

Station (BS)

Mobile

Station (MS)

Uplink (UL)

Downlink (DL)

BS

DL UL DL DLUL UL

TDD Operation

FDD Operation

time

MS

frequency

frequency

time


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Dedicated Physical Channels

Dedicated Physical Data Channel (DPDCH) (UL/DL)

Dedicated Physical Control Channel (DPCCH) (UL/DL)

Common Physical Channels

Physical Random Access Channel (PRACH) (UL)

Primary Common Control Physical Channel (PCCPCH) (DL)

Secondary Common Control Physical Channel (SCCPCH) (DL)

Synchronization Channel (SCH) (DL)

DCH

RACH

FACH

PCH

BCCH

Transport Channels

Transport Channels


155/232

Radio frame (10 ms)

Timeslot (0.625 ms)

Radio frame #1 Radio frame #2 Radio frame #72

Timeslot #1 Timeslot #2 Timeslot #3 Timeslot #16

Superframe (720 ms)

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DPCCH : Dedicated Physical Control Channel

DPDCH : Dedicated Physical Data Channel

PCCPCH : Primary Common Control Physical Channel

SCCPCH : Secondary Common Control Physical Channel

TPC : Transmit Power Control

TFI : Transport Format Indicator

Data

DPCCH DPDCH

0.625 ms, 20 * 2k bits (k=0..6)

Pilot

SymbolsData

0.625 ms, 20 bits

Pilot

SymbolsData

0.625 ms, 20 * 2k bits (k=0..6)

TFITPCPilot

SymbolsDPCCH

DPDCH/

Downlink

PCCPCH

SCCPCH

Downlink

Downlink


157/232



TPC : Transmit Power ControlTFI : Transport Format Indicator

0.625 ms, 10 * 2k bits (k=0..6)

Data

0.625 ms, 10 * 2k bits (k=0..6)

Pilot

SymbolsTPC TFI

DPDCH

DPCCH

Uplink

Uplink


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Dedicated Physical Channels

Dedicated Physical Data Channel (DPDCH) (UL/DL)

Dedicated Physical Control Channel (DPCCH) (UL/DL)

DCH

Common Physical Channels

Physical Random Access Channel (PRACH) (UL) RACH

Perch Channel (DL)

Common Physical Channel (CPCH) (DL)

PCH

FACH

BCH*

* BCH in IMT-2000 corresponds to BCCH in UTRA

Transport Channels

Transport Channels

RI Data TPC Data

DPCCH DPDCH DPCCH DPDCH DPCCH

0.625 ms, 20 * 2k bits (k=0..6)

DataPilot

Symbols

0.625 ms, 20 bits

Pilot

SymbolsDPCCH

DPDCH/

Downlink

CPCH

Downlink



CPCH : Common Control Channel


RI : Rate Information


160/232

0.625 ms, 10 * 2k bits (k=0..6)

Data

0.625 ms, 10 * 2k bits (k=0..6)

Pilot

SymbolsTPC

DPDCH

DPCCH

Uplink

Uplink




RI

RI : Rate Information

Data1Pilot

SymbolsTPC RI Data2 GuardDedicated physical channel Data1

Data1 Data2Pilot

SymbolsCommon physical channel

0.625 ms

Guard

(Burst 1 and Burst 2)

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: Downlink : Uplink

a) Symmmetric UL/DL allocation with multiple switching points

c) Asymmetric UL/DL allocation with a single switching point

b) Asymmetric UL/DL allocation with multiple switching points

10 ms

0.625 ms


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Midamble

96 chips

GP

976 chips 512 chips 976 chips

Midamble

96 chips

GP

256 chips1104 chips 1104 chips

Burst 1

Burst 2

0.625 ms

GP : Guard Period

data symbols data symbols

data symbols data symbols

k = 0,1,2,3

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Rate

Matching

Static

Rate

Matching

Static

Interleaver

Interleaving

coding/

Channel

Interleaving

coding/

Channel

Time

Mux

Dynamic

Rate

Matching

Service #1

Service #L

DPDCH


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CRC CRC

speech bit stream

Compressed

16 bit 80 bit

CRC checksum

attachment

96 bits

Tail

8 bit

Tail

Attachment

(96 + 8) x 3 = 312 bits

Dedicated

Channel (DCH)

radio unit 312 bits

312 bits

Convolutionalencoding

R = 1/3, K = 9

Interleaving

(Optional)


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Q x DCH

Time-multiplex DCHDCH DCH

DCH DCH DCH2 Q1

1 2 Q

bitsL x

L x 10 ms

Rate matching

L segmentation

1 2 L

Frame

Interleaving

1 2 L

DPDCH#1 DPDCH#2 DPDCH#L

Mapping

to

Physical

Channels

10 ms 10 ms 10 ms


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information

User

20480 bits

Segmentation

Reed-Solomonencoding +Interleaving

X Tail

20480 x 210/200 = 21504 bits 16 x 8 = 128 bits

R = 200/210

Convolutional

coding

R = 2/3

(21504 + X + 128) x 3/2 = 32256 + 3X/2 + 192 bits

244 bits 117 blocks 276 bits 104 blocks

Puncturing removes 3900 + 3X/2 bits, removes 3744 + 3X/2 bits,

QPSK

modulation

117 blocks 104 blocks122 symbols 138 symbols

10 ms

Burst 2Burst 1

yielding 28548 bits yielding 28704 bits


170/232

DPCCH DPDCH

DPDCH

DPDCH

Physical Channel 1

Physical Channel 2

Physical Channel L

0.625 ms

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k = 0k = 1k = 2k = 3k = 4k = 5k = 6

lowest bit ratehighest bit rate


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Complex

Multiply

I

QDPCCH

DPDCH

I+jQ

Real

Imag


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S PDPDCH/DPCCH


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Preamble

Idleperiod

1 ms

0.25 ms

Message

10ms

MS ID

Required

Service Optional user packet CRCData part

P RI P RIControl part


178/232

1.25 ms

Access slot #1

Access slot #2

Access slot #8

1.25 ms

Random access burst

Random access burst

Random access burst8.75 ms

11.25 ms


179/232

Signature Signature Signature

Data

Q

I


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Data

Data

10 ms

periodIdle

Power

Time

Power

Time

Normal frame

Compressed frame


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GPS

sub area

coverage areamain area

: base stations

: sub-area beacon base station

: main-area beacon base station


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1.25 MHz

Multi-carrier modulation (N = 3) Direct spread modulation (N = 3)

Single carrier modulation


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PilotPower Control

Bit

1.25 ms Power Control Group (PCG)


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0 00 00 00 00 01 11 11 11 11 1 0000011111 0000011111 0 00 00 00 00 01 11 11 11 11 1000001111100000111110 00 00 00 00 01 11 11 11 11 1

0 0 00 0 00 0 00 0 00 0 01 1 11 1 11 1 11 1 11 1 11.25 ms

20 ms

#1 #2 #16

1.25 ms

5 ms

#1 #2 #4

Guard time


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rateData

Physical

channel

Conv/Turbo

Encoder

Code rate

Repetition Puncturing

Channelrate


194/232

Conv/Turbo

Encoder

Code rate

Datarate

Repetition 1 Puncturing Interleaver Repetition 2

Channelrate


195/232

scrambling code

Data S P

Power Control

Symbol

Power Control

Symbol

Complex

Multiply

Complex

Insertion

Insertion

ChannelisationWalsh code

cell-specificscrambling code

Long

I

Q


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Channel

Walsh Code

Walsh Code

Fundamental

Supplemental

Channel

Channel

Pilot

Walsh Code

Control

Channel

Dedicated

Walsh Code

Complex

Multiply

scrambling code

User-specific

I

Q

scrambling codeComplex


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Sub Attempt

(BS1)

Sub Attempt Sub Attempt

(BS2) (BSn)

Access Attempt

Access Probe

Time

Power

Access

Preamble

Access Channel

Message Capsule

Pilot Channel (PICH)

Access Channel (ACH)

Power


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Complex

Multiply

Channel

Pilot

(PICH)

Channel

Access

(ACH)

Walsh code

Walsh code

Baseband

Baseband

scrambling code

User-specific

scrambling code

Filter

Filter

Complex


199/232

PI

IP

PI

time

IP : Initial Power

PI : Power Increment

Access probes


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mobile radio comms book ver2 sample chapters

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