A Programmable Max-Log-MAP Turbo Decoder Implementation
نویسندگان
چکیده
منابع مشابه
A Programmable Max-Log-MAP Turbo Decoder Implementation
In the advent of very high data rates of the upcoming 3G long-term evolution telecommunication systems, there is a crucial need for efficient and flexible turbo decoder implementations. In this study, a max-log-MAP turbo decoder is implemented as an application-specific instruction-set processor. The processor is accompanied with accelerating computing units, which can be controlled in detail. ...
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Turbo Codes are very flexible codes and it can be considered as one of the great achievements in the field of communication systems. Turbo Codes have been adopted for wireless digital communication system and they remain unaffected even under heavy traffic situation. The MAX-Log MAP Algorithm which performs necessary computation in Log domain has the capacity to reduce hardware complexity. Majo...
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Turbo code is a great achievement in the field of communication system. It can be created by connecting a turbo encoder and a decoder serially. A Turbo encoder is build with parallel concatenation of two simple convolutional codes. By varying the number of memory element (encoder configuration), code rate (1/2 or 1/3), block size of data and iteration, we can achieve better BER performance. Tur...
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Turbo code is one of the most significant achievements in coding theory. Turbo decoding architectures have greater error correcting capability than any other known code. The successive decoding procedures carried out in the conventional Max-Log-MAP algorithm are performed in parallel, and well formulated into a set of simple and regular matrix operations, which can therefore considerably speed ...
متن کاملDesign of Log-Map / Max-Log-Map Decoder
The process of turbo-code decoding starts with the formation of a posteriori probabilities (APPs) for each data bit, which is followed by choosing the data-bit value that corresponds to the maximum a posteriori (MAP) probability for that data bit. Upon reception of a corrupted code-bit sequence, the process of decision making with APPs allows the MAP algorithm to determine the most likely infor...
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ژورنال
عنوان ژورنال: VLSI Design
سال: 2008
ISSN: 1065-514X,1563-5171
DOI: 10.1155/2008/319095