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Transactions: WSEAS TRANSACTIONS ON COMMUNICATIONS
Transactions ID Number: 27-606
Full Name: Yung-Fa Huang
Position: Associate Professor
Age: ON
Sex: Male
Address: 168, Jifong E. Rd., Wufong Township, Taichung County, Taiwan
Country: TAIWAN
Tel: +886-4-23323000
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Fax: +886-4-23305539
E-mail address: yfahuang@mail.cyut.edu.tw
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Title of the Paper: Performance of Partial Parallel Interference Cancellation With MC-CDMA Transmission Techniques for Power Line Communication Systems
Authors as they appear in the Paper: Yung-fa Huang, Tan-hsu Tan, Chia-hsin Cheng and Neng-chung Wang
Email addresses of all the authors: yfahuang@cyut.edu.tw,thtan@ntut.edu.tw,chcheng@cyut.edu.tw,ncwang@nuu.edu.tw
Number of paper pages: 10
Abstract: In this paper, we describe and evaluate multistage partial parallel interference cancellation (PPIC) multiuser detectors to improve the performance of multi-carrier direct-sequence code-division multiple-access (MC-CDMA) power line communication (PLC) systems over frequency selective fading channels with non-perfect power control. To improve the effectiveness of PPIC, we examined the adequate partial cancellation weights (PCWs) for the PPIC. Thus, the performance improvement in MC-CDMA based PLC systems using PPIC multiuser detectors is investigated. The high data rate demanded in the multimedia PLC systems can be offered by the MC-CDMA systems. However, the multiple access interferences (MAIs) exist in the frequency selective fading channels for the down link even though using an orthogonal pseudo-random noise (PN) code and occur for the up link due to the non-orthogonal spreading codes. In the high system load, the MAIs become the dominant factor degrading the !
performance. Therefore, the performance of a multistage PPIC is further investigated for the MC-CDMA PLC systems. Simulation results show that with adequate cancellation weights, the PPIC scheme can obtain a superior performance than the conventional PIC scheme, especially at heavy system load. Furthermore, with the bit-error rate (BER) requirements of 0.001, the five-stage PPIC with PCWs, 0.7, 0.8, 0.9 and 1 for stage 2, 3, 4 and 5, respectively, increases the capacity from 15 of CPIC to 19 users with the processing gain 32 over the power line channels.
Keywords: MC-CDMA, PLC, Multiuser detection, Multiple access interference, Partial parallel interference cancellation, Partial cancellation weight
EXTENSION of the file: .pdf
Special (Invited) Session: Performance of Power Line Communication Systems Using MC-CDMA
Organizer of the Session: 591-280
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