Abstract
In this paper we study the impact of user effects on the performance of
receive antenna diversity systems in flat Rayleigh fading channels. Three
diversity combining techniques are compared: maximal ratio combining (MRC), equal gain combining (EGC), and selection combining (SC). User effects are considered in two scenarios: 1) body loss (the reduction of effective antenna gain due to user effects) on a single antenna, and 2) equal body loss on both antennas. The system performance is assessed in terms of mean SNR, link reliability, bit error rate of BPSK, diversity order and ergodic capacity. Our results show that body loss on a single antenna has limited (bounded) impact on system performance. In comparison, body loss on both antennas has unlimited (unbounded) impact and can severely degrade system performance. Our results also show that with increasing body loss on a single antenna the performance of EGC drops faster than that of MRC and SC. When body loss on a single antenna is larger than a certain level, EGC is not a "sub-optimal" method anymore and has worse performance than SC.
| Original language | English |
|---|---|
| Title of host publication | Radioengineering |
| Editors | Spolecnost pro radioelektronicke inzenyrstvi |
| Place of Publication | Czech Republic |
| Pages | 286-299 |
| Number of pages | 14 |
| Volume | 23 |
| Publication status | Published - Apr 2014 |
Fields of science
- 202038 Telecommunications
- 202 Electrical Engineering, Electronics, Information Engineering
- 202030 Communication engineering
- 202037 Signal processing
JKU Focus areas
- Mechatronics and Information Processing