Title :
RLS adaptation of widely linear minimum output energy algorithm for DS-CDMA systems
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper we propose an adaptive widely linear (WL) minimum output energy (MOE) algorithm to suppress interference in DS-CDMA systems. In contrast to prior work which could handle only real-valued modulation, the proposed algorithm is applicable to both real- and complex-valued modulation utilizing the recursive least-squares (RLS) algorithm for adaptive training of the filter taps. SINR of the conventional MOE algorithms as well as the proposed algorithm are expressed and compared rigorously. Simulation results further confirm the performance comparison.
Keywords :
code division multiple access; interference suppression; least squares approximations; modulation; recursive filters; spread spectrum communication; DS-CDMA systems; MOE algorithms; RLS adaptation; adaptive training; complex-valued modulation; filter taps; interference suppression; real-valued modulation; recursive least-squares algorithm; widely linear minimum output energy algorithm; Adaptive filters; Computational complexity; Electrical engineering; Multiaccess communication; Multiple access interference; Multiuser detection; Power engineering and energy; Resonance light scattering; Signal to noise ratio; Wireless communication;
Conference_Titel :
Telecommunications, 2005. advanced industrial conference on telecommunications/service assurance with partial and intermittent resources conference/e-learning on telecommunications workshop. aict/sapir/elete 2005. proceedings
Print_ISBN :
0-7695-2388-9
DOI :
10.1109/AICT.2005.79
