Abstract
In this paper, we investigate the impact of imperfect multipath detection on the performance of CDMA systems employing space-time spreading. Conventionally, the multipath components are detected and assigned to the RAKE fingers based on their average energy content. It will be shown that the errors produced by the conventional scheme in detecting the potential multipath components severely impact the performance of the receiver. To boost the performance, we introduce an improved multipath detection scheme based on estimating the interference power in the resolved paths. Our results show that the proposed scheme not only improves the bit error rate performance significantly but also utilizes the pilot power much more efficiently.
| Original language | English |
|---|---|
| Pages (from-to) | 262-266 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 61 |
| Issue number | 1 |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | 2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden Duration: 30 May 2005 → 1 Jun 2005 |