A novel architecture of single-carrier block transmission DS-CDMA

Ming Xian Chang, Chou Chang Yang

研究成果: Conference contribution

7 引文 斯高帕斯(Scopus)

摘要

Single-carrier (SC) block transmission [1][2] is an efficient scheme in multipath channels. With frequency-domain equalization, SC block transmission avoids complex time-domain equalization. There are also several systems proposed that combine SC-FDE with code-division multiple access (CDMA). However, unlike conventional direct-sequence (DS) CDMA, the present CDMA systems with FDE may be not suitable for asynchronous users, for lack of a signal model that could suitably express the despread signal in frequency domain. In this paper, we propose a novel architecture of SC block transmission DS-CDMA that can be applied for asynchronous users. A new signal model is derived that represents spreading, channel effect, and despreading as a series of circular convolutions. This signal model helps in deriving a new frequency-domain minimum mean-square error (MMSE) equalization algorithm for SC block transmission CDMA. Based on the proposed signal model, we also propose a simple channel estimation algorithm. Our architecture and signal model can be applied for further development of multi-user detection algorithms.

原文English
主出版物標題2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
頁面892-896
頁數5
DOIs
出版狀態Published - 2006
事件2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada
持續時間: 2006 九月 252006 九月 28

出版系列

名字IEEE Vehicular Technology Conference
ISSN(列印)1550-2252

Other

Other2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
國家Canada
城市Montreal, QC
期間06-09-2506-09-28

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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