Design of reduced-rank MMSE combiner in asynchronous MC-DS-CDMA

Chien Hwa Hwang*, Feng-Tsun Chien

*Corresponding author for this work

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this paper, we consider the design of a reduced-rank minimum mean-squared error (MMSE) combiner in an asynchronous multicarrier-direct sequence-code division multiple access (MC-DS-CDMA) system. It is shown that the combiner weights are related to quantities whose expressions resembles the eigenvalue moments of the interference autocorrelation matrix. To lift the burden of recomputing the weights from time to time, the weights are evaluated in a large system regime and averaged over random parameters including asynchronous delays, correlated fading coefficients and spreading sequences. Explicit expressions for the asymptotic weights of the MMSE combiner are derived. The large system setting is with the spreading gain N and user number K approaching infinity, but K/N = β and the number of sub-carriers both finite.

原文English
主出版物標題ICC 2008 - IEEE International Conference on Communications, Proceedings
頁面1388-1392
頁數5
DOIs
出版狀態Published - 12 九月 2008
事件IEEE International Conference on Communications, ICC 2008 - Beijing, China
持續時間: 19 五月 200823 五月 2008

出版系列

名字IEEE International Conference on Communications
ISSN(列印)0536-1486

Conference

ConferenceIEEE International Conference on Communications, ICC 2008
國家China
城市Beijing
期間19/05/0823/05/08

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