In this paper, an efficient iterative receiver for digital communication systems is investigated. It combines a Non-Binary Low Density Parity-Check (NB-LDPC) decoder with a high-order constellation demapper and a Mult...
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ISBN:
(纸本)9781479930838
In this paper, an efficient iterative receiver for digital communication systems is investigated. It combines a Non-Binary Low Density Parity-Check (NB-LDPC) decoder with a high-order constellation demapper and a multiple-inputmultiple-output (MIMO) detector. A suboptimal MIMO detector based on the Belief Propagation (BP) algorithm is investigated as an alternative to a Maximum Likelihood (ML) detector. Extrinsic information is exchanged between the detector and the decoder thanks to an iterative process. EXtrinsic Information Transfer (EXIT) charts enable to analyze the convergence behaviour of the proposed MIMO-BP detector. A suitable schedule for the different types of iterations is finally proposed to reduce the receiver latency and improve its error correction performance.
This paper presents the implementation details and experimental evaluation results of a high-performance multiple-inputmultiple-output (MIMO) detector for new generation wireless LAN systems. Performance of an IEEE 8...
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ISBN:
(纸本)9781424456383
This paper presents the implementation details and experimental evaluation results of a high-performance multiple-inputmultiple-output (MIMO) detector for new generation wireless LAN systems. Performance of an IEEE 802.11n compliant FPGA-based prototype equipped with a dual MIMO processing unit is evaluated in a small office environment for both linear MMSE and lattice-reduction aided detection modes. Experimental results for MIMO configurations transmitting two independent data streams show performance gains for the reduced-lattice detector comparable to those obtained when adding an extra receiver antenna for spatial diversity in the linear case, with only a moderate increase in receiver complexity.
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