-
ITUM.12257A3.1A3.7/
-
()/() PSTN
-
() (ch/MHz/cell) FDMA TDMA CDMA SCDMA (TACS) (GSM) (IS-95) 1 15
20 >100 1 3-7 10 50SCDMA
-
( ); TACS GSM IS-95 SCDMA 30-50W 2-3W 1W 0.1W
-
(CN)(RAN) 2G 3G GSM PDCIS-41(CDMA)GSMIS-95 CDMAcdma2000-1x3x
W-CDMA NNITD-SCDMA/TD-CDMAIPIP
-
3G
-
3G
-
3G
-
3G
-
Generations of Wireless SystemIMT-2000 IMT-2000
GSMUMTSIS95cdma-2000TD-SCDMALAS-CDMA
-
WCDMA3GPP Rel993GPP Rel4 3GPP Rel5
2000/032001/032002/03GSM/GPRSWCDMA FDDIPCall Server/
MGWIPHSPDAWCDMAHSDPAIPIPIP2001/06
-
cdma2000IS-95A199519982000QCELP9.6kbps115.2kbps
8307.2kbpscdma20001xEV-DO/DV 2002DO:DV:IS-95Bcdma20001x cdma2000-3x
?cdma20001x EVcdma2000 1x EV-DO/DV
-
WCDMAcdma2000
WCDMA
cdma2000
HSDPA
1X EV-DO
1X EV-DV
2002/03
2001
?
10M
2.4M
2.4M
RF
-
WCDMA3GPPWCDMADoCoMoIub
cdma2000IS95AbisBTSBSC
-
WCDMAcdma2000
WCDMA
cdma2000
ITU 7
ANSI 7
IMSI
MIN
IMSI10
MINIRM
-
CDMACDMAITU 7MINIMSIMINIMSICDMACDMAMINIMSI
-
WCDMA
cdma2000
Chip
5MHz/3.84Mcps
cdma20003
1.2288Mcps10%
1.25MHz/1.2288Mcps
WCDMA
WCDMA
8AMR
12.2Kbps
AMR4.75Kbps
8Kbps(EVRC)13Kbps(QCELP)
EVRC
-
WCDMA
cdma2000
1500Hz
800Hz
GPS
13%
GPS
-
WCDMA
cdma2000
///GSM
///IS-95
Pilot Beacon
TSTDSTTD
5dB
OTDSTS
-
WCDMAcdma20001x(Erlang/MHz/cell) WCDMA200110cdma200020018
WCDMAcdma2000
WCDMA(12.2Kbps)
cdma2000(8Kbps)
19.6
18.5
17.4
3/
16.4
15.7
16.2
120/
15
14.1
13.2
-
(Kbps/MHz/cell)WCDMAcdma2000 WCDMA200110cdma200020018
WCDMA
cdma2000
384Kbps
144 Kbps
64 Kbps
153.6 Kbps
451
394
351
270
3/
451
386
343
210
120/
350
300
279
210
-
WCDMAcdma2000 2001/12 60km/s 17.15dbi25
WCDMAWCDMAcdma2000
WCDMA
cdma2000
dBm
-121
-125
-119
-127.5
144Kbps
5
384 Kbps
3
12.2Kbps
10.5
-
3G 450%27%WCDMA
WCDMA
cdma2000
-
TD-SCDMATD-SCDMAITUTD-SCDMA:CDMA
-
TD-SCDMA199811TG8/1TD-SCDMAIMT-200019993TD-SCDMA19994(CWTS)199910ITUTD-SCDMA199911TG8/1TD-CDMARSPCCDMA
TDD(5.3)20005ITU-R RA-2000RKEY(M.1455)RSPC(M.1457)
-
TD-SCDMA3GPPITUTDD1999TDD3GPP19995CWTS3GPP19999(OHG)TD-SCDMACDMA
TDD199910TSG RANTDD1.28McpsTD-SCDMA3GPP
-
TD-SCDMA3GPP()1999TDD20006R003GPPRelease
420013(TD-SCDMA)GSM/GPRS(R99R4)IP(R5)
-
TDD2GHzFDDFDD()ICRF
-
TDD / CDMA/ TD-SCDMA7dBUTRA-TDD12dB CDMATDD ()FDD30%
FDDTDD120km/h
-
TDD FDD FDD TDD 3GFDDTDD
-
IMT2000CDMA TDD CDMA TDD RTT TD-SCDMAUTRA TDD TDD TD-SCDMAUTRA
TDD 1.6MHz/1.28Mcps 5MHz/3.84Mcps 7/5ms15/10ms CDMA1/8chip2chips
(QPSK)DCATDXODMA IMT2000FDD
-
TD-SCDMA ... ... ... ... ...
-
TDD()
-
5ms 16 ,internet() 2Mbit/s5ms5ms () 6/1() Example:
-
(cdma) CDMA CDMA (MAI= )161.6 MHzCDMATimeslot
-
Joint DetectionJoint Detection:
-
, JD ? JD ?Joint Detection
-
1 , (JD) . CDMA,,. MAI, (MAICDMA) MAICDMAJDCDMA ( 3). MAI, 20
dB. TD-SCDMA
Input user signal 1
(
(
(
(
(
(
(
Input user signal n
RX
Joint detection
MAI-Calculation
Matrix
Output user signal 1
(
(
(
(
(
(
(
Output user signal n
( ( ( ( ( ( (
Channel estimator
for n channels
-
8/:
-
(DCA)1.6 MHz TD-SCDMA 5 MHz 3
(FDMA) (DCA)
-
(DCA)7 TD-SCDMA (TDMA) (SDMA) (DCA)
-
DCA: Pi : SIR( slow DCA)
DCA: UDD
Code pooling: ,
(DCA)
-
DCA (Bit rate) drop out (I, CIR, BER ...) (DCA)
-
(Smart Antenna)
-
-
-
TDD : 8 dB = C/I . C/I (ICI) 8 dB. : c = 3 C/I 8 dB. : c = 3 C/I
16 dB. : 2.
C/I relations in macro cells
RF-carrier bandwidth (B = 1.6 MHz
-
:TD-SCDMAW-CDMATDDFDD20 + 15 MHz60 MHz1.6 MHz 5 MHz 2003 (: WLL)
1900192019802010202560 MHz60 MHz20 MHz 15 MHzFDD ()FDD ()TDDTDD 30
MHz 21102170188585 MHz15 MHz TD-SCDMA 190 MHz 1.6 MHz15 + 85
MHzTDD? TD-SCDMA ?
-
TD-SCDMA: 350m20Km 384 kbps
: ( 10km/h)384 kbps
-
TD-SCDMA:TDD3G TD-SCDMA IMT20003GPP Release 4 3G3G:
-
TD-SCDMA + TDMADS_CDMA() CDMA (3GPP)
IMT2000
-
TD-SCDMA
-
TD-SCDMA CDMACDMACDMA12N
-
TD-SCDMA A/DDSPRFA/DD/AMCUDSP
-
TD-SCDMAMSBS0BS0MSBSMSMS
-
TD-SCDMA3GPP
CDMA TDD
CDMA FDD
DS
UTRA TDD
3.84Mcps
TD-SCDMA
1.28Mcps
L2
L3
-
TD-SCDMATDD1.6MHz1.6MHz5MHzInternet
