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Multi-antenna channel duplicating wavebeam shaping method

A channel multiplexing and beamforming technology, applied in the field of multi-antenna channel multiplexing, can solve the problems of inability to transmit multiplexed channels, high channel correlation, and the inability of spatial multiplexing methods to provide independent channels.

Active Publication Date: 2007-04-04
SHANGHAI ULTIMATE POWER COMM TECH
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Problems solved by technology

[0007] From the above analysis, it can be seen that the two MIMO channel multiplexing methods in the MIMO system are suitable for different environments. In the environment with few scatterers, the spatial multiplexing method based on MIMO cannot provide independent channel due to the high correlation of channels. , so the channel cannot be multiplexed and transmitted; and for the environment with rich scatterers, the beamforming method cannot effectively suppress the channel interference between different users due to the small correlation of the channel

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Embodiment Construction

[0049]Since the fading between each pair of transmitting and receiving antennas in the MIMO system is independent, a MIMO channel can be regarded as multiple parallel sub-channels to provide transmission of parallel data streams. If different data streams are transmitted on these parallel sub-channels, it is called spatial multiplexing. Spatial multiplexing divides a data stream into multiple sub-streams, and transmits these sub-streams to different mobile stations simultaneously through different antenna units. Therefore, the capacity of a MIMO channel increases linearly with the number of sub-channels. Using multiple antennas at the transmitter and receiver at the same time, and in an environment rich in scatterers, MIMO can greatly increase the channel capacity.

[0050] The core idea of ​​the present invention is to group each antenna unit, and each antenna group sends a different data stream to the corresponding mobile station to realize the spatial multiplexing of the a...

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Abstract

The invention is concerned with the multi-antenna channel multiplying method, which is the receiver-transmitter is used for using several antennae units and the several users of far end to process communication, it is: processes grouping of the antenna unit according to the prearrange rule; forms the un-sending data to the corresponding sending data stream of the antenna group according to the mode of space multiplying; each antenna group processes send after processing the weighting process according to corresponding shaping coefficient of the user. Each antenna group sends the parallel data to different user, uses the space multiplying mode between each antenna group, uses the wave-beam shaping mode to send data between the antenna unit of the antenna group, adapts the different circumstance of the channel.

Description

technical field [0001] The invention relates to the channel multiplexing technology of multiple antennas, in particular to the spatial multiplexing technology of antennas and the antenna beam forming technology. Background technique [0002] At present, for a MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) system, methods for channel multiplexing using multiple antennas are divided into spatial multiplexing methods and beamforming methods. [0003] In a wireless communication system, when both the base station and the terminal have multiple antennas, if the working channel environment is less spatially correlated, the space division multiplexing technology of the MIMO (Multiple Input Multiple Output) system can be used as High-speed data services are provided in hotspot areas. Using this technology can greatly increase the rate of data transmission, but also requires a higher signal-to-noise ratio. [0004] The so-called MIMO spatial multiplexing techn...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0691H04B7/0697
Inventor 孙长果索士强
Owner SHANGHAI ULTIMATE POWER COMM TECH
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