Capacity of MIMO CDMA with Multi-code Detection under Multi-path Fading Channel

doi:10.13190/jbupt.200603.99.014

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (3): 99-102.doi: 10.13190/jbupt.200603.99.014

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Capacity of MIMO CDMA with Multi-code Detection under Multi-path Fading Channel

WANG Jun-xuan¹ , RAO Wen-yuan², LIAO Han-cheng²

1. Xi’an Institute of Post and Telecommunication Department of Communications Engineering, Xi’an 710061，China；2. School of Electronics, Jiangxi University of Finance and Economics，Nanchang 330013，China

Received:2005-07-01 Revised:1900-01-01 Online:2006-06-30 Published:2006-06-30
Contact: Wang Jun-xuan

Abstract

Abstract:

The capacity of multi-antennas CDMA systems with LS codes and Walsh codes under interference covariance known and interference covariance unknown were studied in the paper. Theory analyses were also given. Both of theory and numeral results show that: capacity of CDMA systems based on LS codes is far greater than that of CDMA systems based on Walsh codes; for LS CDMA systems, interference covariance is no influence on capacity, and capacity is linear with SNR when using multi-code detection; but for conventional CDMA systems, it will loss any capacity as interference covariance unknown, and also have a floor when SNR great than 18dB.

Key words: channel capacity, spread spectrum access codes, multi-code detection

CLC Number:

TN929.5

WANG Jun-xuan¹ , RAO Wen-yuan², LIAO Han-cheng². Capacity of MIMO CDMA with Multi-code Detection under Multi-path Fading Channel[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2006, 29(3): 99-102.

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Capacity of MIMO CDMA with Multi-code Detection under Multi-path Fading Channel

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