標題: A Lattice-Reduction Aided Max-Log List Demapper for Iterative Coded MIMO Receiver
作者: Hsieh, Tung-Jung
Sheen, Wern-Ho
Chen, Sin-Horng
Hsu, Jen-Yuan
資訊工程學系
Department of Computer Science
關鍵字: max-log list demapper;lattice reduction;coded MIMO receiver;breadth-first search;iterative decoding
公開日期: 1-Jan-2014
摘要: The max-log list demapper has been widely employed in the implementation of a coded multiple-input multiple-output (MIMO) receiver, where only a candidate-list of signal vectors is examined in the likelihood-ratio calculation to reduce complexity. Traditionally, the candidate-list is generated in the original-lattice domain which, unfortunately, results in a severe degradation in the performance of demapper if the channel is in ill-condition. In this paper, a new lattice-reduction aided max-log list demapper is proposed for iterative receivers in which the candidate-list is generated after a successive cancellation of multi-layer interference in the lattice-reduced domain. Thanks to the newly designed metric and search algorithm for the generation of the candidate-list, the proposed demapper provides significant gains over the existing methods, especially for the cases with a small list size and/or under a spatially-correlated channel. The prior information coming out of the decoder is also exploited to lower the complexity of the demapper.
URI: http://dx.doi.org/10.1109/IS3C.2014.279
http://hdl.handle.net/11536/129807
ISBN: 978-1-4799-5277-9
ISSN: 
DOI: 10.1109/IS3C.2014.279
期刊: 2014 INTERNATIONAL SYMPOSIUM ON COMPUTER, CONSUMER AND CONTROL (IS3C 2014)
起始頁: 1069
結束頁: 1073
Appears in Collections:Conferences Paper