Performance of relay-aided downlink MC-CDMA system using transmitter preprocessing

Ravi, Ananya; Haribhaskaran, Alagu Sanjana; Sridharan, Bhanusri; Nagaradjane, Prabagarane

doi:10.1109/vitae.2014.6934415

2014 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace &Amp; Elec 2014

DOI: 10.1109/vitae.2014.6934415

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Performance of relay-aided downlink MC-CDMA system using transmitter preprocessing

Ananya Ravi¹,

Alagu Sanjana Haribhaskaran²,

Bhanusri Sridharan³

et al.

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Performance of cooperative communication aided MC-CDMA system using transmitter preprocessing based on vector quantized CSI

Ravi¹,

Nagaradjane²,

Velmurugan³

2014

2014 International Conference on Communication and Signal Processing

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In this contribution, we investigate the performance of a cooperative communication aided downlink (DL) multi-carrier code division multiple access (MC-CDMA) system with the aid of transmitter preprocessing (TP) realized based on vector quantized (VQ) channel state information (CSI) acquired via feedback channels. In our work, we assume that each of the 7{ destination mobile stations (DMS) is supported by a group of mobile stations (MSs) acting as relays to achieve the relay diversity. Specifically, we employ preprocessing at the base station (BS) to suppress the multi-user interference (MUI) at the relays that precludes in achieving the relay diversity. Further, inter-relay interference (IRI) at the destination mobile stations (DMSs) is mitigated with the support of the preprocessing operated at the relays. To be specific, the preprocessing operated at the BS is based on the maximum-signal-to-interference-plus noise ratio (MSINR) approach, while that operated at the relays is based on the classical minimum-mean-square error principle. Both the preprocessing approaches are formulated based on the VQ-CSI acquired via feedback channels. Our study demonstrates that TP-aided cooperative DL MC-CDMA system results in better achievable bit-error-rate (BER) as the TP assists in achieving the relay diversity by eliminating the DL-MUI and IRI at the relays and the DMSs, respectively. Furthermore, our study reveals that the attainable BER of the VQ-CSI based TP remains close to that attained with the perfect CSI based TP.Index Terms-MC-CDMA, transmitter preprocessing, relay diversity, multi-user interference.

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Performance of cooperative communication aided MC-CDMA system using transmitter preprocessing based on vector quantized CSI

Ravi¹,

Nagaradjane²,

Velmurugan³

2014

2014 International Conference on Communication and Signal Processing

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View full text Add to dashboard Cite

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Performance of relay-aided downlink MC-CDMA system using transmitter preprocessing

Cited by 1 publication

References 8 publications

Performance of cooperative communication aided MC-CDMA system using transmitter preprocessing based on vector quantized CSI

Performance of cooperative communication aided MC-CDMA system using transmitter preprocessing based on vector quantized CSI

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