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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: 2010-09-15
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 Main components of a communication terminal 10 for a 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 remote devices, and a The receiver 30 of the device receives the signal. Transmitter 20 and receiver 30 are coupled to one or more antennas 18 through duplexers or switches 16 that allow full-duplex operation.

[0016] Transmitter 20 receives an information stream from an information source, processes the information stream to generate a transmit signal suitable for transmission over a radio channel, and modulates the transmit signal onto an RF carrier. Transmitter 20 includes source encoder 22 , channel encoder 24 , and modulator 26 . Source encoder 22 removes redundancy or randomizes the information bit stream to produce ...

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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 US Provisional Application No. 60 / 942,770, filed June 8, 2007, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates generally to error coding for mobile communication networks, and more particularly to a method and apparatus for computationally efficient convolutional coding with rate matching. Background technique [0004] Rate matching is a technique used in mobile communication systems to match the code rate of an encoder (such as a convolutional encoder or a turbo encoder) to the data transmission rate of a communication channel. Rate matching typically involves puncturing or repeating 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 transmission rates. [0005] In con...

Claims

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Application Information

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Patent Type & Authority Applications(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)