Performance of relay-aided downlink DS-CDMA system using transmitter preprocessing based on feedback information

Murali, Nithya Vani Anichetty; Nagaradjane, Prabagarane; Damodaran, Selvam Paranche

doi:10.1016/j.compeleceng.2013.12.008

Cited by 10 publications

(2 citation statements)

References 18 publications

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“…MGF expression can be found through integral evaluation of the CDF expression derived in this work. The MGF expression can be obtained by solving the integral in (13…”

Section: Average Error Probabilitymentioning

confidence: 99%

“…The bit-error rate performance of two-hop AF relaying with DS-CDMA systems is investigated over different fading channels by presenting only computer simulations. In [13], the authors analysed the performance of DS-CDMA system with relaying by taking into account multi-user transmitter pre-processing based on channel impulse responses. Zappone et al [14] considered the resource allocation problem in a relay-aided DS-CDMA wireless communication system.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Analytical Study for Two-Hop Amplify-and-Forward DS-CDMA Systems over Rayleigh/Nakagami-m Fading Channels

Kapucu

Bilim

Develı

2016

World Congress on Electrical Engineering and Computer Systems and Science

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This paper presents analytical solutions for the performance of a single relay aided amplify-and-forward (AF) direct sequence code division multiple access (DS-CDMA) system over Rayleigh/Nakagami-m fading channels. The source-destination channel is assumed to be Rayleigh distributed while relay-destination link is Nakagami-m distributed. First, a cumulative distribution function (CDF) is derived for the source-relay-destination link and the derived CDF expression is used to evaluate the outage probability. Then, a moment generating function (MGF) is obtained through integral evaluation of the derived CDF expression in order to evaluate the average error probability of the considered system. Finally, the accuracy of the proposed analytical expressions are confirmed by computer simulations.

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“…MGF expression can be found through integral evaluation of the CDF expression derived in this work. The MGF expression can be obtained by solving the integral in (13…”

Section: Average Error Probabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Analytical Study for Two-Hop Amplify-and-Forward DS-CDMA Systems over Rayleigh/Nakagami-m Fading Channels

Kapucu

Bilim

Develı

2016

World Congress on Electrical Engineering and Computer Systems and Science

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Mitigation of co-channel interferences in cognitive multi-carrier code division multiple access system by singular value decomposition techniques

et al. 2017

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Multi-user Performance of Relay-Aided MC-CDMA Downlink System Employing Transmitter Preprocessing Based on Feedback of Vector Quantized CSI

Nagaradjane¹,

Tamilarasi

2015

Wireless Pers Commun

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The achievable bit-error-rate (BER) performance of a relay-aided downlink (DL) multi-carrier code division multiple access (MC-CDMA) cellular system, where multi-user interference (MUI) and inter-relay interference (IRI) are the dominant channel impairments is investigated in this paper, principally from a transmitter signal processing perspective. Specifically, in this paper, we investigate the considered system by employing three cooperation strategies. The MUI and IRI are mitigated with the aid of the transmitter preprocessing (TP) operated at the base station (BS) and relays, respectively. The TP operated at the BS that suppresses the MUI at the relays is based on the maximum-signalto-interference-plus-noise ratio approach, while that operated at the relays that mitigates the IRI relies on the classical transmit minimum-mean-square-error principle. Further, the TP in our work is constructed with the aid of vector-quantized channel state information (VQ-CSI) acquired via feedback channels. Our simulation study shows that relay-aided cooperative DL MC-CDMA system employing TP, results in better achievable BER, as the TP helps in achieving the relay-diversity by mitigating the DL-MUI and IRI at the relays and DMSs, respectively. Furthermore, our study demonstrates that the resultant BER performance of the VQ-CSI based TP remains close to that achieved with the perfect CSI based TP. Hence, we advocate that the feedback of the VQ-CSI to the transmitter for conceiving the preprocessing can be considered as an efficient approach, particularly in a frequency division duplex type wireless system.

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Performance of relay-aided downlink DS-CDMA system using transmitter preprocessing based on feedback information

Cited by 10 publications

References 18 publications

An Analytical Study for Two-Hop Amplify-and-Forward DS-CDMA Systems over Rayleigh/Nakagami-m Fading Channels

An Analytical Study for Two-Hop Amplify-and-Forward DS-CDMA Systems over Rayleigh/Nakagami-m Fading Channels

Mitigation of co-channel interferences in cognitive multi-carrier code division multiple access system by singular value decomposition techniques

Multi-user Performance of Relay-Aided MC-CDMA Downlink System Employing Transmitter Preprocessing Based on Feedback of Vector Quantized CSI

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