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Channel encoding/decoding device and method

A channel coding and channel decoding technology, applied in the direction of adjusting channel coding, coding, coding components, etc., can solve the problem that turbo encoder cannot implement performance and so on

Inactive Publication Date: 2004-06-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With short data frame input, the turbo encoder cannot realize its full performance

Method used

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  • Channel encoding/decoding device and method
  • Channel encoding/decoding device and method
  • Channel encoding/decoding device and method

Examples

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no. 1 example

[0050] A first embodiment of the adaptive dual encoder 16 of the present invention will now be described with reference to FIGS. 1 and 2 . The operation of the adaptive dual encoder 16 will be described with reference to two cases; the first case is that the information message represents a voice service or data with a low data rate and short frames, and the second case is that the information message represents a voice service or data with a high data rate or The data of the long dataframe.

[0051] 1a. Convolutional encoder operation (for low data rates and short frame data)

[0052] Referring to FIG. 1 , in operation, if the message to be transmitted is voice service or data with a low data rate and short frame, the CPU 12 reads the corresponding control command from the control command memory 14 to select the convolutional encoder 18 to operate, And switch the switch 28 to the first multiplexer 22 .

[0053] Then, the switch control signals SWC1 to SWCn are simultaneousl...

no. 3 example

[0069] A third embodiment of the adaptive channel decoding device of the present invention is shown in Figure 4 .

[0070] This adaptive channel decoding equipment comprises: information message receiver 80, is used to receive information message from the information message transceiver 10 of the channel coding equipment shown in Fig. 1; The transmission rate determines which decoder to use, reads the corresponding decoding mode command from the control command memory 84, and outputs a control signal. Here, the decoding mode command includes decoding mode switching control signals S1 to S5 for selecting convolution decoding or turbo decoding in the selection convolution / turbo decoder 100 . Although the information message indicates the service type and frame size in this embodiment, it should be noted that the decoding method is determined by detecting the service type or frame size.

[0071] The CPU 82 determines which decoding method to select based on the received inform...

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Abstract

There are provided channel encoding / decoding device and method to efficiently transmit / receive voice and data. Data with a low data rate or a short data frame is convolutionally encoded and data with a high data rate or a long data frame is turbo-encoded, thereby increasing encoding performance.

Description

technical field [0001] The present invention generally relates to a channel coding / decoding device and method in a communication system, and more particularly to a device and method for adaptive channel coding / decoding for efficient transmission / reception of voice and data. Background technique [0002] The third generation digital communication system provides diverse services and uses variable-sized data frames ranging from several bits to several kilobits. To encode data in such systems, three types of channel encoders are generally used: Reed Solomon (Reed-Solomon) encoders, convolutional encoders and ReedSolomon-convolutional concatenated encoders. Since it is difficult to meet the requirements of various systems including bit error rate (BER) and delay, an appropriate channel encoder should be selected according to service type and frame length and / or data rate. [0003] Each of the above-mentioned channel coders has their own advantages and disadvantages, as follows:...

Claims

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Application Information

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IPC IPC(8): H03M13/00H03M13/13H03M13/23H03M13/29H03M13/39H03M13/41H03M13/45H04B14/04H04L1/00H04L1/08H04L17/30H04L27/00H04L29/00
CPCH04L1/005H04L1/0066H04L1/0017H03M13/35H03M13/3938H04L1/0071H04L1/0068H03M13/23H03M13/2957H04L1/0025H03M13/6513H04L1/0059H04L1/0043H04L1/0009H04L1/0054H04L1/0052H04L25/497
Inventor 朴晶洙
Owner SAMSUNG ELECTRONICS CO LTD
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