Title :
Performance variability of linear multiuser detection for DS-CDMA
Author :
Honig, Michael L. ; Veerakachen, Watcharee
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA
Abstract :
The performance of a linear multiuser detector for direct-sequence (DS) code division multiple access is studied assuming a random signature model and minimum mean squared error (MMSE) detection. Performance criteria considered are near-far resistance (NFR) and signal to interference ratio (SIR). An analytical approximation for the probability density function (PDF) of the NFR is presented, which is accurate when the ratio of users to processing gain is small. The PDF for the SIR is obtained via computer simulation, and our results show that the spread in SIR over the user population can be significant
Keywords :
approximation theory; interference suppression; probability; pseudonoise codes; radiofrequency interference; signal detection; spread spectrum communication; DS-CDMA; MMSE detection; PDF; analytical approximation; computer simulation; direct-sequence code division multiple access; interference suppression; linear multiuser detection; linear multiuser detector; minimum mean squared error; near-far resistance; performance variability; probability density function; processing gain; random signature model; signal to interference ratio; user population; Added delay; Code standards; Density functional theory; Detectors; Electrical resistance measurement; Interference suppression; Multiaccess communication; Multiuser detection; Power control; Power system modeling;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.503472
