Global ETD Search
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Showing 1 to 9 of 9 for “"EXIT chart"”.
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Turbo space-time coding for mimo systems : designs and analyses
… schemes, the extrinsic information transfer (EXIT) chart method, is extended from the binary/nonbinary code case to coded modulation case. This extension prepares the convergence analysis for turbo space-time code. Turbo space-time codes with symbols precoded by randomly chosen unitary time …
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Self-concatenated coding for wireless communication systems
… with the aid of Extrinsic Information Transfer (EXIT) charts. The EXIT chart based design has been found an efficient tool in finding the decoding convergence threshold of the constituent codes. Additionally, in order to recover the information loss imposed by employing binary rather than …
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Low-bit-rate joint source-channel decoding aided wireless video communications
… A novel Extrinsic Information Transfer (EXIT) chart matching procedure was used for the design of our specific IRCC which allowed us to design near-capacity schemes.<br/><br/>Additionally, we developed a novel Unequal Source-Symbol Probability Aided (USSPA) design, which is capable of …
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Low complexity turbo equalizations and lower bounds on information rate for intersymbol interference channels.
In this research, low complexity turbo equalization algorithms are examined as an alternatives to the optimal, but, much more complex, Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm. First, the soft-in soft-out (SISO) decision feedback equalizer (DFE) algorithm with the extrinsic information mapping …
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Iterative receivers with channel estimation for MIMO and multi-user OFDM systems
… are compared. The comparison focuses on the complexity-performance tradeoff for the receiver configurations. The results show that low complexity algorithms, despite requiring more receiver iterations, tend to have the lowest overall complexity for a given bit error rate (BER). Paper II presents …
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Model-code separation architectures for compression based on message-passing
… and model-quantizer separation and low-complexity quantizer design are revealed. In many ways, the proposed architecture is uniquely suitable for understanding and tackling these problems. Throughout, a discourse is maintained over architectural and complexity issues, with a view toward …
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Channel-coded time-hopping and direct-sequence ultrawideband systems
… with the aid of EXtrinsic Information Transfer (EXIT) charts in order to achieve near-capacity performances. Each chapter constitutes an evolutionary improvement of the previous chapter.<br/>Chapter 2 deals with the UWB channel, which is one of the major factors differentiating UWB system from …
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Closed-loop multiple antenna aided wireless communications using limited feedback
… Furthermore, an Extrinsic Information Transfer (EXIT) Chart optimised Channel Impulse Response (CIR) Quantizer is proposed in Chapter 5, which assists the system in maintaining the lowest possible CSI feedback overhead, while ensuring that an open EXIT-tunnel is still attainable for the sake of …
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Near-capacity co-located and distributed MIMO systems
… only a fraction of the computational complexity of Maximum Likelihood (ML)-style joint detection.<br/><br/>Furthermore, for the sake of taking full advantage of the available colocated MIMO channel capacity, we present a low-complexity iteratively detected space-time transmission …