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Large iteration receiving method used in hybrid automatic repeat request system

A hybrid automatic retransmission and receiving method technology, applied in the field of large iterative receiving, can solve the problem of high computational complexity, achieve the effect of improving throughput, ensuring coding gain, and high accuracy

Active Publication Date: 2015-01-28
白盒子(上海)微电子科技有限公司
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Problems solved by technology

The maximum likelihood detection algorithm is the detection algorithm with the best performance, but its computational complexity is high

Method used

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  • Large iteration receiving method used in hybrid automatic repeat request system
  • Large iteration receiving method used in hybrid automatic repeat request system
  • Large iteration receiving method used in hybrid automatic repeat request system

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Embodiment Construction

[0029] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0030] figure 1 It is a working flow chart of the present invention. according to figure 1 , the large iterative receiving method applied to the hybrid automatic repeat request system of the present invention processes each frame of data received according to the following steps:

[0031] 1) Initialize the parameters of the receiver, including the maximum number of transmissions of the HARQ, the maximum number of iterations of the large iteration receiver for each transmission, the size of the storage space allocated to the receiver for soft storage, and soft input and soft output Decoder, soft input and soft output detector, solution rate matching and related parameters required by the rate matching module;

[0032] 2) will receive the data y and the...

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Abstract

The invention discloses a large iteration receiving method used in a hybrid automatic repeat request system. The method can be used in a broadband multi-antenna orthogonal frequency division multiplexing communication system. The large iteration technology is used in the hybrid automatic repeat request communication system, so that based on a receiver obtaining diversity gain provided by the hybrid automatic repeat request, through transmission of soft amount information between a detector and a decoder, the method improves reliability of the soft amount information on an output end of the detector, thereby increasing possibility that a coding determination result of the decoder passes code word verification, reducing probability that a present frame data needs to retransmit again, and further improving performance of a system. On condition of hardly adding system hardware complexity, the method significantly improves performance of the receiver in an existing hybrid automatic repeat request, and has relatively high practical value.

Description

technical field [0001] The invention belongs to the hybrid automatic retransmission technology of data transmission in a wireless communication system, the field of multi-antenna detection and the decoding field of channel error correction codes, and relates to a large iterative receiving method applied to a hybrid automatic retransmission request system. Background technique [0002] In order to overcome the influence of channel time-varying characteristics and multipath fading on signal transmission, wireless communication systems can use forward error correction (FEC, Forward Error Correction), automatic repeat request (ARQ, Automatic Repeat-reQuest) and hybrid automatic repeat Request (HARQ, Hybrid Automatic Repeat-reQuest) and other error control schemes, thereby reducing the frame error rate of the system and improving system performance. Among them, the concept of HARQ was first proposed by J. M. Wozencraft and M. Horstein in 1960. It is a combination of FEC and ARQ t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06H04L1/18
Inventor 赵春明汪莹张华姜明
Owner 白盒子(上海)微电子科技有限公司
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