Title :
Performance of Adaptive Parallel Interference Cancellation for OFDM Mobile Communication Systems
Author :
Huang, Yung-Fa ; Tan, Tan-Hsu ; Chen, Hsing-Chung ; Yeh, Cheng-Min
Author_Institution :
Dept. of Inf. & Commun. Eng., Chaoyang Univ. of Technol., Taichung, Taiwan
Abstract :
In this paper, the performance of parallel interference cancellation (PIC) multiuser detector in orthogonal frequency division multiple access (OFDMA) mobile communication systems is investigated. In multiuser systems, the multi-user interference (MUI) degraded the system performance, especially in near-far effect environments. The PIC scheme is proposed to reduce the MUIs and to improve the bit error rate (BER) performance for uplink OFDMA systems. Simulation results show that under the near far problems for both block sub carrier assignment scheme (BCAS) and block-interleaved sub carrier assignment scheme (ICAS), the PIC scheme can improve the BER performance for all users.
Keywords :
OFDM modulation; channel allocation; interference suppression; mobile radio; multi-access systems; multiuser detection; radiofrequency interference; OFDM mobile communication systems; adaptive parallel interference cancellation; bit error rate performance; block interleaved subcarrier assignment scheme; block sub carrier assignment scheme; multiuser detector; multiuser interference; orthogonal frequency division multiple access; Base stations; Bit error rate; Delay; Detectors; Interference; Mobile communication; OFDM; OFDMA communication systems; multi-user interference; multiuser detection; near far problems; parallel interference cancellation;
Conference_Titel :
Broadband and Wireless Computing, Communication and Applications (BWCCA), 2011 International Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4577-1455-9
DOI :
10.1109/BWCCA.2011.82
