A novel code-based iterative PIC scheme for multirate CI/MC-CDMA communication

被引：1

作者：

Mukherjee, Mithun ^{[1
]}

Kumar, Preetam ^{[1
]}

机构：

[1] Indian Inst Technol Patna, Dept Elect Engn, Patna 800013, Bihar, India

来源：

EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | 2011年

关键词：

SOFT INTERFERENCE CANCELLATION; DECISION-FEEDBACK DETECTORS; MULTIUSER DETECTION; MC-CDMA; PERFORMANCE; RECEIVERS;

D O I：

10.1186/1687-1499-2011-155

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper introduces a novel code-based iterative parallel interference cancellation technique (Code-PIC) for the multirate carrier interferometry/multicarrier code division multiple-access (CI/MC-CDMA) system, which supports simultaneous transmission of high and low data rate users. In Code-PIC scheme, multiple-access interference (MAI) for the desired user is estimated based on the projection of subcarrier and subsequent removal of interference from the received signal depending on specific high or low data rate users. Carrier interferometry (CI) codes are used to minimize the cross-correlation between users, which significantly reduces the multiple-access interference (MAI) for the desired user. The effect of MAI in CI/MC-CDMA is reduced by giving proper phase shift to different set of users. Improved estimation of MAI in Code-PIC results in lower residual interference after interference cancellation. Simulation results show that Code-PIC scheme offers improved BER performance over AWGN and Rayleigh fading channels compared to Block-PIC and Sub-PIC with reduced latency and complexity.

引用

页数：12

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