An Extendable Fixed-Complexity Sphere Decoder for Downlink Multi-User MIMO Communication System 


Vol. 39,  No. 4, pp. 180-187, Apr.  2014


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  Abstract

In this paper, a extension of a fixed-complexity sphere decoder (FSD) to perform interference signal detection and cancelling is proposed for downlink multiuser multiple input-multiple output (MIMO) communication system. It is based on the application of channel matrix expansion on generalized sphere decoder (GSD), and modification of the channel matrix ordering scheme to a FSD algorithm for interference detection. A Monte Carlo simulation shows that the proposed algorithm improves the receiver performance by 3 dB as compared to maximum likelihood detection without interference cancelling at 10% packet error rate in configuration of 702 Mbit/s datarate for four users respectively on IEEE802.11ac.

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  Cite this article

[IEEE Style]

J. Koo, Y. Kim, J. Kim, "An Extendable Fixed-Complexity Sphere Decoder for Downlink Multi-User MIMO Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 4, pp. 180-187, 2014. DOI: .

[ACM Style]

Jihun Koo, Yongsuk Kim, and Jaeseok Kim. 2014. An Extendable Fixed-Complexity Sphere Decoder for Downlink Multi-User MIMO Communication System. The Journal of Korean Institute of Communications and Information Sciences, 39, 4, (2014), 180-187. DOI: .

[KICS Style]

Jihun Koo, Yongsuk Kim, Jaeseok Kim, "An Extendable Fixed-Complexity Sphere Decoder for Downlink Multi-User MIMO Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 4, pp. 180-187, 4. 2014.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880