Subspace tracking for uplink/downlink array processing in CDMA systems

被引：0

作者：

Simeone, O ^{[1
]}

Nicoli, M ^{[1
]}

Spagnolini, U ^{[1
]}

机构：

[1] Politecn Milan, Dip Elettr & Informaz, I-20133 Milan, Italy

来源：

GLOBECOM'03: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-7 | 2003年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In antenna array systems, downlink beamforming and uplink maximum likelihood structured channel estimation can be formulated under a common framework related to the algebraic stucture of the two problems. The slow variations of the uplink and downlink spatial subspaces, due to moving terminals, can be tracked by using an adaptive structure based on a common processing block, namely a subspace tracker. Simulations for realistic propagation conditions show that the structure is able to efficiently cope with fast-varying fading channels, allowing relevant gains compared to conventional techniques.

引用

页码：824 / 828

页数：5

共 50 条

[21] Uplink and downlink communications qualities in CDMA cellular systems considering effects of traffic distribution
Takeo, K
Sato, S
Ogawa, A
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, 1999, E82A (12): : 2677 - 2686
[22] Transform domain array processing for CDMA systems
Zhang, YM
Yang, KH
Amin, MG
PROCEEDINGS OF THE TENTH IEEE WORKSHOP ON STATISTICAL SIGNAL AND ARRAY PROCESSING, 2000, : 23 - 27
[23] Spatio-temporal array processing for DS-CDMA downlink transmission
Montalbano, G
Ghauri, I
Slock, DTM
CONFERENCE RECORD OF THE THIRTY-FOURTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, 2000, : 521 - 525
[24] Channel identifiability for blind subspace based channel estimator in uplink MC CDMA systems
Thiagarajan, L. B.
Attallah, S.
Liang, Y. C.
Meraim, K. Abed
2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13, 2008, : 584 - +
[25] Adapting a downlink array from uplink measurements
Hochwald, BM
Marzetta, TL
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2001, 49 (03) : 642 - 653
[26] Subspace-based multiuser detection for antenna array CDMA systems
Ye, GT
Bi, GA
Li, ZY
JOURNAL OF COMMUNICATIONS AND NETWORKS, 2001, 3 (02) : 148 - 152
[27] Subspace algorithms for synchronization and tracking in CDMA
Joutsensalo, J
Lilleberg, J
Hottinen, A
Karhunen, J
FIRST IEEE SIGNAL PROCESSING WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, 1997, : 369 - 372
[28] Subspace-based tracking of multipath channel parameters for CDMA systems
Sengupta, C
Cavallaro, JR
Aazhang, B
EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS, 1998, 9 (05): : 439 - 447
[29] On the coding-spreading trade-off in downlink and uplink MC-CDMA systems
Bisaglia, P
Benvenuto, N
VTC2004-FALL: 2004 IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-7: WIRELESS TECHNOLOGIES FOR GLOBAL SECURITY, 2004, : 4903 - 4907
[30] Capacity analysis of uplink and downlink in multimedia DS-CDMA systems based on constraint models
Duan, X
Niu, ZS
Zheng, JL
2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5: NEW FRONTIERS IN TELECOMMUNICATIONS, 2003, : 402 - 406

← 1 2 3 4 5 →