Title :
Least Lp-norm interference suppression for DS/CDMA systems in non-Gaussian impulsive channels
Author :
Lee, Seoyoung ; Dickerson, Julie
Author_Institution :
Electron. & Telecommun. Res. Inst., Taejon, South Korea
Abstract :
Interference suppression using the minimum dispersion (MD) criterion has good near-far resistance for direct-sequence code-division multiple-access (DS/CDMA) systems in the presence of additive non-Gaussian impulsive noise modeled as a symmetric alpha-stable (SαS) process. This paper applies least Lp-norm (LP) interference suppression to DS/CDMA systems in a SαS non-Gaussian impulsive noise channel. Simulation results show that the LP interference suppression scheme increases the system capacity and BER performance at the cost of higher computational complexity. The proposed detector has superior near-far resistance to the adaptive MD detector
Keywords :
channel capacity; code division multiple access; computational complexity; error statistics; impulse noise; interference suppression; least squares approximations; multiuser channels; phase shift keying; radiofrequency interference; spread spectrum communication; BER performance; BPSK; DS/CDMA systems; IRLS algorithm; adaptive MD detector; additive nonGaussian impulsive noise; computational complexity; direct-sequence code-division multiple-access; iteratively reweighted least squares; least Lp-norm interference suppression; minimum dispersion criterion; multiple-access interference; near-far resistance; nonGaussian impulsive noise channel; simulation results; symmetric alpha-stable process; system capacity; Additive noise; Bit error rate; Computational complexity; Computational efficiency; Computational modeling; Detectors; Frequency estimation; Interference suppression; Multiaccess communication; Multiple access interference;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.765405
