Iterative Detection and Decoding Algorithms for MIMO Systems in Block-Fading Channels Using LDPC Codes
We propose iterative detection and decoding (IDD) algorithms with low-density parity-check (LDPC) codes for multiple-input multiple-output (MIMO) systems operating in block-fading and fast Rayleigh fading channels. Soft-input-soft-output minimum-mean-square-error (MMSE) receivers with successive int...
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| Vydáno v: | IEEE transactions on vehicular technology Ročník 65; číslo 4; s. 2735 - 2741 |
|---|---|
| Hlavní autoři: | , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
New York
IEEE
01.04.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
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| ISSN: | 0018-9545, 1939-9359 |
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| Abstract | We propose iterative detection and decoding (IDD) algorithms with low-density parity-check (LDPC) codes for multiple-input multiple-output (MIMO) systems operating in block-fading and fast Rayleigh fading channels. Soft-input-soft-output minimum-mean-square-error (MMSE) receivers with successive interference cancellation are considered. In particular, we devise a novel strategy to improve the bit error rate (BER) performance of IDD schemes, which takes into account the soft a posteriori output of the decoder in a block-fading channel when root-check LDPC codes are used. A MIMO IDD receiver with soft information processing that exploits the code structure and the behavior of the log-likelihood ratios is also developed. Moreover, we present a scheduling algorithm for decoding LDPC codes in block-fading channels. Simulations show that the proposed techniques result in significant gains in terms of BER for both block-fading and fast-fading channels. |
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| AbstractList | We propose iterative detection and decoding (IDD) algorithms with low-density parity-check (LDPC) codes for multiple-input multiple-output (MIMO) systems operating in block-fading and fast Rayleigh fading channels. Soft-input-soft-output minimum-mean-square-error (MMSE) receivers with successive interference cancellation are considered. In particular, we devise a novel strategy to improve the bit error rate (BER) performance of IDD schemes, which takes into account the soft a posteriori output of the decoder in a block-fading channel when root-check LDPC codes are used. A MIMO IDD receiver with soft information processing that exploits the code structure and the behavior of the log-likelihood ratios is also developed. Moreover, we present a scheduling algorithm for decoding LDPC codes in block-fading channels. Simulations show that the proposed techniques result in significant gains in terms of BER for both block-fading and fast-fading channels. We propose iterative detection and decoding (IDD) algorithms with low-density parity-check (LDPC) codes for multiple-input multiple-output (MIMO) systems operating in block-fading and fast Rayleigh fading channels. Soft-input-soft-output minimum-mean-square-error (MMSE) receivers with successive interference cancelation are considered. In particular, we devise a novel strategy to improve the bit error rate (BER) performance of IDD schemes, which takes into account the soft a posteriori output of the decoder in a block-fading channel when root-check LDPC codes are used. A MIMO IDD receiver with soft information processing that exploits the code structure and the behavior of the log-likelihood ratios is also developed. Moreover, we present a scheduling algorithm for decoding LDPC codes in block-fading channels. Simulations show that the proposed techniques result in significant gains in terms of BER for both block-fading and fast-fading channels. |
| Author | Uchoa, Andre G. D. Healy, Cornelius T. de Lamare, Rodrigo C. |
| Author_xml | – sequence: 1 givenname: Andre G. D. surname: Uchoa fullname: Uchoa, Andre G. D. email: andre.uchoa@cetuc.puc-rio.br organization: Centro de Estudos em Telecomun., Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil – sequence: 2 givenname: Cornelius T. surname: Healy fullname: Healy, Cornelius T. email: cthealy@cetuc.puc-rio.br organization: Centro de Estudos em Telecomun., Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil – sequence: 3 givenname: Rodrigo C. surname: de Lamare fullname: de Lamare, Rodrigo C. email: delamare@cetuc.puc-rio.br organization: Centro de Estudos em Telecomun., Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil |
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| Keywords | multiple-input multiple-output (MIMO) systems low-density parity-check (LDPC) codes iterative detection and decoding (IDD) schemes Block-fading channels |
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| SubjectTerms | Algorithms Binary system Bit error rate block fading channels Blocking Channels Codes Decoding Detectors Error correcting codes Fading IDD schemes Iterative decoding LDPC codes Low density parity check codes MIMO MIMO (control systems) MIMO systems Receivers Strategy |
| Title | Iterative Detection and Decoding Algorithms for MIMO Systems in Block-Fading Channels Using LDPC Codes |
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