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Implementation and Complexity Analysis of List Sphere Detector for MIMO-OFDM systems

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Title: Implementation and Complexity Analysis of List Sphere Detector for MIMO-OFDM systems
Author: Myllylä, Markus; Juntti, Markku; Cavallaro, Joseph R.
Type: Conference Paper
Publisher: IEEE
Citation: M. Myllylä, M. Juntti and J. R. Cavallaro,"Implementation and Complexity Analysis of List Sphere Detector for MIMO-OFDM systems," in 42nd Asilomar Conference on Signals, Systems and Computers, 2008, pp. 1852-1856.
Abstract: A list sphere detector (LSD) is an enhancement of a sphere detector (SD) that can be used to approximate the soft output maximum a posteriori probability (MAP) detector used in the detection of the multiple-input multiple-output (MIMO) signals. The LSD consists of three different parts: the preprocessing unit, the LSD algorithm unit and the log-likelihood ratio (LLR) calculation unit. Architecture design is the key point to enable an efficient implementation of the LSD. In this paper, we design the architecture for the whole detector structure and exploit the parallelism and pipelining possibilities of the presented architecture units. The designed architecture is implemented in a field programmable gate array (FPGA) using Mentor Graphics Catapult C tool. We show that a scalable architecture can be designed for the LSD. The LSD is also shown to be feasible for practical implementation, and the implementation complexity and latency results are presented.
Date Published: 2008-10-01

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  • ECE Publications [1047 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
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    Publications by Rice Faculty and graduate students in multimedia communications