Near-far resistant single-user channel identification by interference subspace rejection in wideband CDMA

被引：4

作者：

Affes, S ^{[1
]}

Hansen, H ^{[1
]}

Mermelstein, P ^{[1
]}

机构：

[1] Univ Quebec, INRS Telecommun, Montreal, PQ H5A 1C6, Canada

来源：

2001 IEEE THIRD WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/SPAWC.2001.923842

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

The single-user CDMA spatio-temporal array receiver (STAR-SU) can be extended to a multiuser version (STAR-MU) by incorporating interference subspace rejection (ISR) using spatio-temporal null-beamforming. We can exploit the data-projection step implemented there to enhance the channel identification for STAR-SU so that it is significantly more robust to near-far power variations than the previous formulation. Our approach effectively decomposes the MU subspace tracking into much simpler single-user 1-D subspace tracking operations. Simulations on the downlink reveal that the performance of the new STAR-SU is close to the single-user bound even for near-far ratios as high as 18 dB.

引用

页码：54 / 57

页数：4

共 11 条

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