Impact of channel estimation errors in amplify-and-forward cooperative transmission

Author

Wang, Lei ; Cai, Yueming ; Yang, Weiwei

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

fYear

2010

fDate

21-23 Oct. 2010

Firstpage

1

Lastpage

5

Abstract

We analyze the impact of the channel estimation errors in amplify-and-forward (AF) cooperative communication systems over Rayleigh fading channels with multi-relays assisted. We derive the exact closed-form and the approximate expressions of the cumulative distribution function (CDF) of the received signal-noise-ratio (SNR) for each link. The variance of channel estimation errors varies for different values of the transmit SNR, dominated by the channel estimation quality order. We also present the approximate expression of the average symbol error rate (SER) under different levels of channel estimation errors by using the moment-generating function (MGF) based approach. Numerical results confirm that our theoretical analysis for SER is very accurate.

Keywords

Rayleigh channels; channel estimation; error statistics; Rayleigh fading channels; amplify-and-forward cooperative communication systems; amplify-and-forward cooperative transmission; array channel estimation errors; average symbol error rate; channel estimation quality; cumulative distribution function; moment-generating function; multirelays; Channel estimation; Fading; Protocols; Relays; Signal to noise ratio; Simulation; average symbol error rate (SER); channel estimation errors; cooperative communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2010 International Conference on

Conference_Location

Suzhou

Print_ISBN

978-1-4244-7556-8

Electronic_ISBN

978-1-4244-7554-4

Type

conf

DOI

10.1109/WCSP.2010.5633486

Filename

5633486