Title :
Effective bandwidth and effective interference for linear multiuser receivers in asynchronous channels
Author :
Kiran ; Tse, David
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
The performance in terms of the signal to interference ratio (SIR) of the users has been analyzed in the synchronous case under random spreading sequences for linear multiuser receivers. We extend these results to the asynchronous case. The receivers considered are the decorrelator and the MMSE receiver. We look at linear receivers which have an infinite-horizon observation interval. The analysis shows that in a system with large processing gain and random spreading sequences, there is no loss of performance due to asynchronicity in both the decorrelator and the MMSE receivers
Keywords :
binary sequences; decorrelation; filtering theory; least mean squares methods; multiuser channels; radio receivers; radiofrequency interference; random codes; spread spectrum communication; MMSE receiver; SIR; asynchronous channels; coded symbols; decorrelator; effective bandwidth; effective interference; infinite-horizon observation interval; large processing gain; linear multiuser receivers; noncausal filters; performance; random spreading sequences; signal to interference ratio; spread-spectrum system; Bandwidth; Control systems; Decorrelation; Delay effects; Infinite horizon; Interference; Matched filters; Performance analysis; Performance gain; Performance loss;
Conference_Titel :
Information Theory Workshop, 1998
Conference_Location :
Killarney
Print_ISBN :
0-7803-4408-1
DOI :
10.1109/ITW.1998.706480
