NDLI: Bit-Clusters Trellis Search Based Iterative MIMO Detection Algorithm

Content Provider	Springer Nature Link
Author	Lou, Xizhong Peng, Ting Zhou, Qian Chen, Yanmin
Copyright Year	2014
Abstract	A bit-clusters trellis-search (BCTS) based soft-input soft-output detection algorithm is proposed for iterative Multiple-Input Multiple-Output (MIMO) receivers. Compared to the symbol nodes trellis-search (SNTS) based MIMO detection algorithm, which significantly reduces the search complexity by limiting the number of candidates in each trellis stage compared to sphere decoding algorithm, the BCTS algorithm proposed in this article further reduces the number of candidates in the trellis. In the BCTS algorithm, we replace the symbol node in SNTS algorithm with bit-cluster that represents several relative symbols whose corresponding bit is 0 or 1 while the other bits are not concerned. Because the bit-cluster number is fewer than the symbol node number, the search complexity of proposed BCTS algorithm is much less than that of the SNTS algorithm. The simulation results show, by transforming symbol nodes to bit-clusters in trellis-search detection, the performance is improved nearly 0.5 dB when the bit-error-ratio reaches $$10^{-4}$$ ; the complexity analysis shows the number of partial-Euclidian-distance (PED) comparisons and PED computations are approximately three and one times fewer than that of the SNTS algorithm respectively when constellation size is beyond 16. And this tendency will be more obvious with the transmit antenna number and constellation size increasing.
Starting Page	547
Ending Page	562
Page Count	16
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	81
Issue Number	2
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2014-10-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MIMO Iterative detection Symbol nodes trellis-search (SNTS) Bit-clusters trellis-search (BCTS) Communications Engineering, Networks Signal, Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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