Abstract
We study coherent binary direct-sequence code division multiple access (DS-CDMA) systems operating over frequency-selective Nakagami fading channels. In particular a performance comparison between maximal-ratio combining (MRC) and equal-gain combining (EGC) RAKE receivers is considered. For interference limited systems, perfect MRC RAKE receivers can accommodate about 5 m/(5 m-1) more users than EGC RAKE receivers, where m is the Nakagami fading parameter. MRC has a higher rate of improvement than EGC as the number of combined paths increases. However, imperfect or inaccurate channel fading estimation leads to serious degradation in the performance of MRC receivers and in that case EGC becomes superior to MRC.
| Original language | English (US) |
|---|---|
| Pages | 708-712 |
| Number of pages | 5 |
| State | Published - 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1997 IEEE 6th International Conference on Universal Personal Communications, ICUPC'97. Part 1 (of 2) - San Diego, CA, USA Duration: Oct 12 1997 → Oct 16 1997 |
Other
| Other | Proceedings of the 1997 IEEE 6th International Conference on Universal Personal Communications, ICUPC'97. Part 1 (of 2) |
|---|---|
| City | San Diego, CA, USA |
| Period | 10/12/97 → 10/16/97 |
ASJC Scopus subject areas
- Hardware and Architecture