Title :
Robust sequential interference cancellation for space division multiple access communications
Author :
Leshem, Amir ; Gannot, Sharon
Author_Institution :
Sch. of Electr. Eng., Bar-Ilan Univ., Ramat-Gan, Israel
Abstract :
In this paper, we consider a multiuser detection scheme for space division multiple access communication systems. Sequential interference cancellation (SIC) procedures are subject to performance degradation when the antenna array is only partially calibrated. We propose to incorporate robust beamforming algorithms into the SIC procedure to compensate for the array misalignment. We show by a simulation study that the proposed combination outperforms conventional SIC procedures for various degrees of array misalignment, different SNR values, several array configurations, and two modulation constellations (namely, QPSK and 16-QAM).
Keywords :
antenna arrays; array signal processing; multiuser detection; quadrature phase shift keying; radiofrequency interference; space division multiple access; 16-QAM; QPSK; SIC procedures; antenna array; array configurations; array misalignment; modulation constellations; multiuser detection; robust beamforming; robust sequential interference cancellation; space division multiple access communications; Array signal processing; Arrays; Bit error rate; Channel estimation; Robustness; Sensors; Silicon carbide; Robust beamforming; Sequential interference cancellation;
Conference_Titel :
Signal Processing Conference, 2007 15th European
Conference_Location :
Poznan
Print_ISBN :
978-839-2134-04-6