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Multi-mode viterbi decoding apparatus and decoding method thereof

A decoding device and a technology for decoding data are applied in the field of communication to achieve the effect of improving the decoding throughput and optimizing the design

Active Publication Date: 2013-12-04
SANECHIPS TECH CO LTD
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Problems solved by technology

[0009] The embodiment of the present invention provides a multi-mode Viterbi decoding device and its decoding method to solve the problem of simple stacking of decoding algorithms of encoders of different standards

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Embodiment Construction

[0047]In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0048] Such as Figure 1a As shown, it is a schematic structural diagram of a multimode Viterbi decoding device of the present invention, which includes an input data storage module (input_buffer) 11, a branch path measurement module (dis_gen_v2) 12, a mode selection module (mode_dis_select) 13, and a parallel addition and comparison selection module ( parallel_add_com_sel) 14, surviving path storage module (route_ram) 15, backtracking module (trace_back) 16 and timing control module (viterbi_state_control) 17, wherein:

[0049] The input data storage module is used to store t...

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Abstract

The invention provides a multi-mode viterbi decoding apparatus and a decoding method thereof. The decoding apparatus comprises an input data storage module, a branch path metric module, a mode selection module, a parallel add-compare-select module, a residual path storage module, a backtracking module and a sequential control module, wherein the parallel add-compare-select module is used for performing accumulative calculation on the metric values and branch path metric values of corresponding states according to a state transfer graph for obtaining accumulative values, and sending residual path selection results to the residual path storage module by taking the greatest accumulative value as the new metric value of a next state until data to be decoded ends; and the backtracking module is used for selecting different backtracking modes according to different encoding modes, and begins backtracking from any a state or the state corresponding to the greatest accumulative value so as to obtain decoding results according to the residual path selection results stored by the residual path storage module. By using the multi-mode viterbi decoding apparatus and the decoding method thereof, enormous resources can be shared, design can be optimized, and the decoding throughput can be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a multi-mode Viterbi decoding device and a decoding method thereof. Background technique [0002] With the development of Long Term Evolution (LTE) technology of the 3rd Generation Partnership Project (3GPP), mobile communication is developing in a multi-compatibility and robust direction. Therefore, the application market requires the development of a multi-mode chip that supports LTE, Time Division Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), and Code Division Multiple Access (CDMA) 2000. In channel coding, convolutional coding can effectively resist various noises and interferences in the transmission process by artificially adding redundant information, and can make the system have the ability to automatically correct errors. still cannot be replaced. [0003] Convolutional codes introduce registers in the encoding process, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/41
Inventor 原维
Owner SANECHIPS TECH CO LTD
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