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A multi-antenna transmission system of wireless signal, method and wireless communication system

A technology of a wireless communication system and a transmission system, which is applied in the field of wireless communication systems, and can solve problems such as the inability to obtain fixed transmission antenna cyclic shifts, waste of antenna space resources, etc.

Inactive Publication Date: 2007-05-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems in the prior art that the space resources of the remaining antennas are wasted during the antenna selection and the cyclic shift of the fixed transmitting antenna cannot obtain the diversity gain brought by the antenna selection.

Method used

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  • A multi-antenna transmission system of wireless signal, method and wireless communication system
  • A multi-antenna transmission system of wireless signal, method and wireless communication system
  • A multi-antenna transmission system of wireless signal, method and wireless communication system

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] The present invention combines antenna selection and cyclic delay diversity technology, uses the remaining idle antennas after antenna selection to perform cyclic delay transmission, not only the diversity gain brought by antenna selection can be obtained, but also the cyclic delay transmission on the remaining antennas can be obtained A certain frequency diversity gain.

[0050]Fig. 1 shows the structure of the wireless communication system provided by the present invention, and for simplicity of description, only shows the parts related to the present invention. In the present invention, ...

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Abstract

The multi-antenna emission system comprises: a space-time process unit to process input data flow and output multiple frequency-domain signal data flow, a modulation unit for OFDM modulating to output relative time-domain signal flow; a data flow separation unit to select emission antenna group for every time-domain signal flow and allocate data to relative emission antenna group, and a cycle delay emission module to circular delay all time-domain signal flow on antenna groups. This invention can obtain both space and frequency diversity gains.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a system and method for transmitting wireless signals through a plurality of transmitting antennas in diversity, and a wireless communication system realized by using the multi-antenna transmitting system. Background technique [0002] With the development of wireless mobile communication, users have put forward higher and higher requirements for the rate and quality of service of wireless communication, but the further development of wireless communication is limited due to the lack of wireless spectrum resources. On the other hand, the multipath of wireless channels and time-varying characteristics will cause great damage to the signal transmitted in it. These two practical problems have become obstacles to the development of wireless communication. The MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) technology that has appeared in recent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
Inventor 刘江华曲秉玉
Owner HUAWEI TECH CO LTD
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