In this paper, we propose and analyze a multiuser receiver using a decorrelating filter and Viterbi decoders for trellis-coded direct-sequence code-division multiple-access (DS/CDMA) systems with biorthogonal signal constellation in asynchronous channels. The biorthogonality is implemented by user signature waveforms and the decorrelating filter. The performance of the proposed system is investigated with emphasis on the asymptotic cases: it is shown that the proposed system provides us with some coding gain and near-far resistance. It is confirmed that we can enhance the performance of the proposed system by using base-station antenna arrays.
Bibliographical noteFunding Information:
Manuscript received March 15, 1998; revised April 7, 1999. This work was supported by the Korea Science and Engineering Foundation (KOSEF) under Grant 971-0916-072-2. K. S. Kim is with the Radio and Broadcasting Tech. Laboratory, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-350, Korea. I. Song, H. G. Kim, and Y. H. Kim are with the Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea. S. Y. Kim is with the Department of Electronics Engineering, Hallym University, Chuncheon, Korea. Publisher Item Identifier S 0018-9545(00)03692-6.
All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics