Name
Title | ||
|---|---|---|
Tracking performance of DA and DD multiuser timing synchronizers for short code DS-CDMA systems |
Abstract | ||
|---|---|---|
We consider a direct-sequence code-division multiple-access system operating over frequency-selective multipath and slowly Rayleigh fading channels. In order to implement RAKE reception, the delays of the different paths have to be estimated and the estimates have to be updated. We extend interference mitigation to this estimation problem and design timing recovery schemes accounting for the intersymbol interference and the multiple-access interference present in the signal. Starting from the maximum likelihood approach, we derive data-aided and decision-directed early-late synchronizers and study their tracking performance. The advantage of the interference mitigating synchronizer is illustrated. The sensitivity of the synchronizer to imperfect knowledge of path gains and to near-far situations is also investigated |
Year | DOI | Venue |
|---|---|---|
2001 | 10.1109/49.974610 | IEEE Journal on Selected Areas in Communications |
Keywords | Field | DocType |
multiple-access interference present,interference mitigating synchronizer,delay estimation,data aided,direct-sequence code-division multiple-access system,synchronization,index terms—code-division multiple access,interference mitigation,diversity reception,timing jitter,design timing recovery scheme,intersymbol interference,short code ds-cdma system,decision-directed early-late synchronizers,tracking loops.,rayleigh fading channel,rake reception,dd multiuser timing synchronizers,deci- sion directed,different path,maximum like- lihood estimation,maximum likelihood,fading,spread spectrum communication,codes,maximum likelihood estimation,radio receivers,synchronisation,indexing terms,mle,code division multiple access | Multipath propagation,Synchronization,Intersymbol interference,Rayleigh fading,Synchronizer,Computer science,Real-time computing,Interference (wave propagation),Code division multiple access,Spread spectrum | Journal |
Volume | Issue | ISSN |
19 | 12 | 0733-8716 |
Citations | PageRank | References |
5 | 0.74 | 6 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| M. Guenach | 1 | 64 | 7.37 |
| L. Vandendorpe | 2 | 578 | 82.38 |