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Computationally efficient convolutional coding with rate-matching

A convolutional coding and rate-matching technology, applied in the field of convolutional coding, can solve problems such as low-complexity new rate-matching circuits, and achieve the effect of reducing complexity and improving performance

Active Publication Date: 2013-09-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although rate matching circuits used in the past provide good performance, there is still a need for new rate matching circuits for convolutional codes that provide good performance and have lower complexity

Method used

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  • Computationally efficient convolutional coding with rate-matching
  • Computationally efficient convolutional coding with rate-matching
  • Computationally efficient convolutional coding with rate-matching

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Embodiment Construction

[0015] figure 1 The main components of the communication terminal 10 used in the mobile communication system are shown. The communication terminal 10 includes a system controller 12 for controlling the overall operation of the communication terminal 10, a memory 14 for storing programs and data required for the operation, a transmitter 20 for transmitting signals to a remote device, and The device receives the signal receiver 30. The transmitter 20 and receiver 30 are coupled to one or more antennas 18 through a duplexer or switch 16 that allows full duplex operation.

[0016] The transmitter 20 receives an information stream from an information source, processes the information stream to generate a transmission signal suitable for transmission through a radio channel, and modulates the transmission signal onto an RF carrier. The transmitter 20 includes a source encoder 22, a channel encoder 24, and a modulator 26. The source encoder 22 removes redundancy or randomizes the info...

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Abstract

An error coding circuit comprises a non-systematic convolutional encoder for coding an input bit stream to produce two or more groups of parity bits, an interleaver circuit for interleaving parity bits within each group of parity bits, and a rate-matching circuit for outputting a selected number of the interleaved parity bits ordered by group to obtain a desired code rate.

Description

[0001] Cross references to related applications [0002] This application claims priority to the U.S. Provisional Application No. 60 / 942,770 filed on June 8, 2007, the disclosure of which is incorporated herein by reference. Technical field [0003] The present invention generally relates to error coding used in mobile communication networks, and more particularly relates to a method and apparatus for convolutional coding with high computational efficiency with rate matching. Background technique [0004] Rate matching is a technology used in mobile communication systems to match the code rate of an encoder (such as a convolutional encoder or a turbo encoder) with the data transmission rate of a communication channel. Rate matching typically includes puncturing or repetition of the coded bits output by the encoder to match the data transmission rate of the communication channel. Rate matching allows a single encoder to be used for multiple data channels with different data transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH03M13/6362H03M13/23H03M13/6356H03M13/2792H03M13/2957H03M13/235H04L1/0071H04L1/0069H04L1/0059H03M13/27H03M13/2732
Inventor J-F·程
Owner TELEFON AB LM ERICSSON (PUBL)