Name
Title | ||
|---|---|---|
A Multi-User Cdma Receiver Utilizing Decorrelating Detector With Additional Dummy Pilot Response |
Abstract | ||
|---|---|---|
A pilot assisted CDMA system which uses extended spreading sequences with guard sequences under a quasi-synchronous condition is capable of separating the interference components included in the input of a de-correlating receiver by solving a system of linear equations. The performance of such a system, however, depends on the property of the de-correlating matrix consisting of the received pilots, which correspond to the respective user spreading sequences and the multi-path channel conditions. That is, the regularity of the matrix often tends to degrade, and the rank reduces occasionally primarily due to the multi-paths, resulting in solutions that are vulnerable to AWGN. The present paper proposes an effective technique to solve this problem by introducing a virtual user into a group of real users that are to be served. The simulation results indicate a remarkable improvement in the bit-error-rate (BER) performance. In addition, based on the BER performance, the system has a RAKE-like function that has power-sum characteristics. Copyright (C) 2003 John Wiley Sons, Ltd. |
Year | DOI | Venue |
|---|---|---|
2003 | 10.1002/dac.586 | INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS |
Keywords | DocType | Volume |
CDMA, multi-user detection, RAKE demodulation, noise amplification, channel matched de-correlator, de-correlating detector, pilot assisted system | Journal | 16 |
Issue | ISSN | Citations |
3 | 1074-5351 | 1 |
PageRank | References | Authors |
0.36 | 10 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mitsuhiro Tomita | 1 | 1 | 1.71 |
| Noriyoshi Kuroyanagi | 2 | 57 | 9.66 |
| Satoru Ozawa | 3 | 1 | 3.40 |
| Naoki Suehiro | 4 | 120 | 15.63 |