NDLI: Progressive Hypercube Decoding

Content Provider	IEEE Xplore Digital Library
Author	Monteiro, F.A. Wassell, I.J.
Copyright Year	2007
Description	Author affiliation: Univ. of Cambridge, Cambridge (Monteiro, F.A.)
Abstract	This paper presents a detection technique for multiple-input multiple-output (MIMO) spatial multiplexing systems that is based in a quantized received lattice. This permits the search to be focused into successive ordered subspaces. The proposal greatly reduces the number Euclidian distances need to be calculated replacing it by memory usage for back tracing candidate vectors. Thus, this tool enables further pruning the search tree when using a sphere decoder. The receiver starts by quantizing both the received vector and the lattice points and then defines a neighbourhood around the cell containing the received vector. If needed, the neighbourhood is extended to a larger Manhattan distance. Conversely, dense clusters of lattice points are resolved by increasing the quantization bits per dimension. The paper describes the probability density functions (pdf) of the lattice components and presents numerical results for the pdf of the number of lattice points that are candidates to be evaluated in a subsequent block based on Euclidean distances. All the results are for the frequency flat fast fading channel.
Starting Page	1
Ending Page	5
File Size	2594688
Page Count	5
File Format	PDF
ISBN	9781424409785
DOI	10.1109/ISWCS.2007.4392290
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-17
Publisher Place	Norway
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laboratories Lattices Quantization Probability density function Hypercubes Frequency MIMO Decoding Proposals Signal to noise ratio
Content Type	Text
Resource Type	Article

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