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Adaptive space-time transmit diversity method and apparatus by means of antenna selection

A technology of transmit diversity and antenna selection, applied in space transmit diversity, diversity/multi-antenna systems, multiplex communication, etc., can solve problems such as suboptimal methods

Inactive Publication Date: 2006-07-19
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, from a system capacity perspective, figure 1 In the traditional system structure, the method of transmitting each substream with a fixed antenna combination after STTD coding is not optimal

Method used

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  • Adaptive space-time transmit diversity method and apparatus by means of antenna selection
  • Adaptive space-time transmit diversity method and apparatus by means of antenna selection
  • Adaptive space-time transmit diversity method and apparatus by means of antenna selection

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Embodiment Construction

[0029] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0030] figure 2 Shown is a schematic structure diagram of the MIMO system adopting the technology of the present invention.

[0031] Among them, the sending end and the receiving end use n respectively T and n R The antenna transmits and receives signals. At the sending end, the data to be sent is first divided into n T / 2 data sub-streams, and each data sub-stream corresponds to two transmitting antennas 104 respectively. Each data substream to be transmitted passes through the adaptive modulation and coding module 102 and the space-time transmit diversity coding module 103 in sequence before being sent. Before each substream is sent, the antenna selection unit 201 is required to select two appropriate sending antennas for each substream for transmission. The modulation and coding parameters M required for the AMC operation at the ...

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Abstract

The invention relates to a method for using antenna to selectively operate the self-adaptive STTD. The receiving terminal comprises following steps: according to the estimation of channel, calculating the SINR of coded STTD in different combination of different emission antennas of each sub-flow; according to the SINR, calculating the total transmission property parameter in said combination; selecting the antenna combination with best total transmission property as present selected combination to attain the selective parameter; according to the SINR, selecting AMC parameters for each emission sub-flow; returning the antenna selective parameter and the AMC parameter via the feedback channel to the sending terminal. And the sending terminal comprises: according to the returned AMC parameter, processing the AMC on the data; processing STTO coding; and according to the returned antenna selective parameter, selecting the antenna combination via which to send the data.

Description

technical field [0001] The present invention relates to an antenna selection and adaptive transmit diversity technology in a multi-antenna wireless communication system, and more particularly to a method and device for implementing adaptive space-time transmit diversity by using antenna selection. Background technique [0002] Future wireless communication systems are required to provide higher and higher information transmission rates and communication quality. In order to achieve this goal on limited spectrum resources, multiple antenna technology (MIMO) has become one of the indispensable means used in future wireless communications. In the MIMO system, the transmitting end uses multiple antennas to transmit signals, and the receiving end uses multiple antennas to receive signals. Studies have shown that compared with traditional single-antenna transmission methods, MIMO technology can significantly increase channel capacity, thereby increasing information transmission r...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04J99/00
CPCH04B7/0691H04L25/0204H04L1/0025H04L1/0003H04L1/0009H04L1/0618H04B7/0619
Inventor 佘小明李继峰
Owner PANASONIC CORP
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