| Autor: |
S. Ariyavistakul, N.R. Sollenberger, J.H. Winters |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363). |
| DOI: |
10.1109/vetec.1999.778257 |
| Popis: |
Enhanced Data Rates for Global Evolution (EDGE) is currently being standardized as an evolution of GSM in Europe and IS-136 in the United States as an air interface for high speed data services for third generation mobile systems. We study space-time processing for EDGE to provide interference suppression. We consider the use of two receive antennas and propose a joint equalization and diversity receiver. This receiver uses front-end filters on each diversity branch to perform minimum mean-square error (MMSE) cochannel interference suppression, while leaving the intersymbol interference to be mitigated by the subsequent equalizer. The equalizer is a delayed decision feedback sequence estimator (DDFSE), consisting of a reduced-state Viterbi processor and a feedback filter. The equalizer provides soft output to the channel decoder after deinterleaving. We describe a novel weight generation algorithm and present simulation results on the link performance of EDGE with interference suppression. These results show a significant improvement in the signal-to-interference ratio (SIR) performance due to both diversity (against fading) and interference suppression. At a 10% block error rate, the proposed receiver provides a 20 dB improvement in SIR for both the typical urban and hilly terrain profiles. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
