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Diversity transceiver method and device for dual-stream three-antenna or four-antenna in sc-mimo system

A SC-MIMO, three-antenna technology, applied in the field of open-loop spatial expansion diversity transceiver

Active Publication Date: 2018-05-15
南京易太可通信技术有限公司
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Problems solved by technology

[0005] For MIMO systems, space expansion can achieve diversity gain through the multi-antenna advantages of MIMO systems, but the traditional space expansion diversity cannot be directly combined with UW due to the limitations of many factors

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  • Diversity transceiver method and device for dual-stream three-antenna or four-antenna in sc-mimo system
  • Diversity transceiver method and device for dual-stream three-antenna or four-antenna in sc-mimo system
  • Diversity transceiver method and device for dual-stream three-antenna or four-antenna in sc-mimo system

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Embodiment Construction

[0048] Below in conjunction with specific embodiment, further illustrate the present invention, it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art can all equivalent replacements of the present invention fall within the scope defined by the appended claims of this application.

[0049] In the method proposed by the present invention, at the transmitting front end of the SC-MIMO system, at first, the data bits of the transmission frame are zero-filled according to the specific scheme of space expansion diversity and the constellation mapping scheme to be adopted later; After the flow analysis, it becomes two spatial streams; then each spatial stream is mapped into a data symbol by constellation; and then the corresponding spatial expansion diversity scheme is selected according to different transmit ante...

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Abstract

The invention discloses an SC-MIMO system double-flow tri-antenna or tetra-antenna diversity transmit-receive method and device. A data symbol is decomposed into two space flows by a transmitting end through flow analysis, the two obtained space flows are divided into basic data units, then the basic data units are mapped to three or four transmitting antennas, finally, a UW sequence with a CP structure is inserted in each antenna and behind the basic data unit. An additional UW block is inserted in front of a first data block for sending data. According to instructions of sending space flow number and antenna configuration from a signaling field in a transmitting frame, a receiving end removes the first received UW block first, then a single carrier symbol block is employed as a basic unit, decoding equalization operation of the received signal is carried out according to a spatial expansion diversity scheme of the corresponding transmitting end, and sent original data is obtained. Under a condition that systematic complexity is not raised, dual advantages of UW as a CP and training sequence are ensured, UW is easy to achieve functions of channel estimation, frequency offset correction, phase tracking and the like at the receiving end by utilization of self CP structure of UW.

Description

technical field [0001] The invention relates to a method and device for open-loop space expansion diversity transceiver under a dual-cyclic prefix UW framework in a SC-MIMO system, and belongs to the technical field of wireless communication systems. Background technique [0002] Multiple Input Multiple Output (MIMO) technology has become a key technology in modern wireless communication systems because of its multi-antenna advantages. It can double the system capacity without increasing the system bandwidth and increase the wireless Spectrum utilization in communication systems and improved transmission reliability for higher quality data transmission. Spatial extension diversity is an open-loop process of mapping multiple spatial streams to multiple transmit antennas, which removes the restriction on transmission caused by the mismatch between the number of spatial streams and the number of transmit antennas, and improves the communication quality of the MIMO system. The ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/02H04B7/0413
CPCH04B7/024H04B7/0452H04B7/0456
Inventor 何世文孙裕马士民王海明黄永明杨绿溪洪伟张军江华
Owner 南京易太可通信技术有限公司
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