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Device and method for transmitting and receiving data in CDMA mobile communication system

A technology for sending data and equipment, applied in the field of data sending/receiving equipment, and can solve problems such as low reliability

Inactive Publication Date: 2003-01-22
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the first two bits have high reliability and the last two bits have low reliability

Method used

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  • Device and method for transmitting and receiving data in CDMA mobile communication system
  • Device and method for transmitting and receiving data in CDMA mobile communication system
  • Device and method for transmitting and receiving data in CDMA mobile communication system

Examples

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Embodiment Construction

[0043] specific implementation plan

[0044] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, well-known functions and constructions are not described in detail since they would obscure the description of the present invention with unnecessary detail.

[0045] In the following description, it is assumed that the channel encoder supports coding rates of 1 / 2 and 3 / 4, and 16QAM modulation is selected from QPSK (Quadrature Phase Shift Keying), 8PSK (8 Phase Shift Keying), 16QAM, and 64QAM. When the coding rate is 1 / 2 (symmetric coding rate), the channel encoder receives 1 bit and outputs two bits. Among the two output bits, one bit is a symmetrical bit, which is the actual information data bit, and the remaining one bit is a parity bit, which is used for detection or error correction. When the coding rate is 3 / 4 (during asymmetric coding), the channel coder recei...

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PUM

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Abstract

Disclosed is a method for transmitting data comprised of bits with higher priority and bits with lower priority output from a coder, using a high-order modulator in which a bit stream comprised of at least 3 bits represents one symbol and includes a first bit part with higher reliability and a second bit part with lower reliability. The method comprises modulating the bits with higher priority and the bits with lower priority such that the bits with higher priority are mapped to the first bit part and the bits with lower priority are also mapped to the first bit part at initial transmission; and modulating the bits with higher priority and the bits with lower priority such that the bits with higher priority are mapped to the second bit part and the bits with lower priority are mapped to the first bit part at retransmission.

Description

[0001] The present application claims the priority of Korean Patent Application entitled "Apparatus and Method for Transmitting and Receiving Data in CDMA Mobile Communication System", which was filed with the Korean Industrial Property Office on June 18, 2001, and the application number is No. 2001-34488, the contents of which are incorporated herein by reference. technical field [0002] The present invention generally relates to methods and devices for transmitting and receiving data in a CDMA mobile communication system, and more particularly, to adjusting the reliability of data bits before transmission and weighting and combining received data bits according to the reliability of received data bits Data transmission / reception apparatus and method to improve receiver performance. Background technique [0003] In a communication system, it is impossible to receive a transmitted signal without distortion and noise mixed therei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/29H04B1/707H04J13/00H04L1/00H04L1/14H04L1/18H04L27/34H04L27/36H04W28/06H04W76/02
CPCH04L1/0066H03M13/2957H04L1/1819H04L1/1816H03M13/6325H04L1/0071H04L1/0068H04L2001/0098H04L27/34H04L1/1893H04L1/1845H03M13/6306H04L1/0069H04L1/14
Inventor 金鲁善文庸石金宪基尹在升
Owner SAMSUNG ELECTRONICS CO LTD
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