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Research and Implementation of High-throughput Turbo Decoder

Author: WuZhongMing
Tutor: JiangXiaoBo
School: South China University of Technology
Course: Microelectronics and Solid State Electronics
Keywords: Turbo codes LDPC codes Check matrix Coding model Decoder
CLC: TN764
Type: Master's thesis
Year: 2011
Downloads: 24
Quote: 0
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Abstract


Turbo code having the decoding performance close to the Shannon limit have been various types of communication systems as the channel coding and decoding programs . Appeared shortly after the Turbo code , a low density parity check code ( referred to as an LDPC code ) is also reintroduced with Turbo code , which have similar structural principle , the decoder also has a performance close to the Shannon limit . Turbo codes with simple encoding and decoding performance ; However there are also shortcomings: decoding using maximum likelihood decoding , through the middle of several intertwined intertwined reconciliation more difficult to improve the decoding throughput . Difficult for Turbo codes throughput is improved drawback Turbo codes into the LDPC codes and study the decoding performance . On this basis , Turbo code decoder design based on check matrix . This paper is as follows : 1 -depth study of the Turbo codes encoding model , using shock sequence response Turbo code generator matrix and parity check matrix ; 2 . Check matrix to optimize the design of the Turbo code based LDPC codes using the decoding algorithm for analysis of the decoding process of the turbo code , the experimental results show that the optimized parity check matrix having a good decoding performance ; 3 Turbo Code decoder design based on the LDPC code decoding theory , the decoder the basic modules of a detailed analysis of the design, and the flexibility to increase the degree of parallelism of the decoder to achieve high throughput .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Modulation technique and the modulator,demodulator and the demodulator > Decoder
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