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Multi-antenna emission diversity method and device

A transmit diversity and multi-antenna technology, applied in the field of communication, can solve the problem that the diversity gain needs to be improved

Inactive Publication Date: 2009-08-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

But the diversity gain of this method needs to be improved

Method used

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  • Multi-antenna emission diversity method and device
  • Multi-antenna emission diversity method and device

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Embodiment Construction

[0101] When using the diversity coding matrix mentioned in the prior art for diversity coding, the corresponding position and phase rotation values ​​between the coding blocks after diversity coding and the coding blocks will be the same, which means that they are adjacent in time or frequency domain The channel characteristics of the two coded blocks generated after diversity coding will be relatively close, and the difference in channel characteristics experienced from the perspective of the entire transmission block is not obvious, and a lot of transmission diversity gain is lost.

[0102] The STBC+phase rotation gain of the existing 4-antenna hierarchical coding technology means that the same signal can obtain the diversity gain brought about by differentiated channels and receiver combination at the receiving end after passing through channels with different phase rotations.

[0103] Example: When receiving merges, the same signal s gets Relative to s*‖H 1 ‖Effect of am...

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Abstract

The invention provides a multi-antenna emission diversity method, which includes steps of carrying out diversity coding for conversion symbol obtained by carrying out coding modulation and conversion to the data to be sent, mapping the data on corresponding time space frequency resource and sending. The diversity coding comprises carrying out time space coding and phase rotation to conversion symbol to obtain diversity coding block, and is characterized in that in a same diversity coding block, phase rotation values of a same column are same, phase rotation values of different columns are incomplete same, and phase rotation values of at least a pair of corresponding positions in phase rotation values of corresponding position between at least one diversity coding block and other diversity coding blocks. The invention also provides a multi-antenna emission diversity device. The method and the device of the present invention obtain diversity gain brought by different signal passing through differential channel, thereby increasing diversity gain.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multi-antenna transmit diversity method and device. Background technique [0002] In the uplink transmission of wireless communication, due to the consideration of the cost of the power amplifier of the terminal, a single-antenna transmission method adopted by the mainstream standard is to perform DFT (discrete Fourier transform) before transforming into a time-domain signal to ensure its time-domain The peak-to-average ratio of the signal reduces the performance requirements for the power amplifier. With the development of technology, the application of a single antenna no longer meets the requirements of uplink transmission, so the multi-antenna technology has received extensive attention. One multi-antenna technique that is used is diversity. However, when some diversity schemes for downlink transmission are directly applied to uplink transmission, the peak-to-average rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08H04L1/06H04L27/26
Inventor 陈艺戬戴博于辉
Owner ZTE CORP
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