Method for selecting transmitting antenna in space multiplexing multi-input and multi-output system

A transmitting antenna and spatial multiplexing technology, which is applied in space transmitting diversity, diversity/multi-antenna systems, etc., can solve the problems of increasing the amount of computation, errors in the number of transmitting antennas, and no explanation, so as to improve self-adaptability and reduce The effect of steps

Inactive Publication Date: 2007-08-08
ZTE CORP
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Problems solved by technology

However, the application did not explain the basis for judging the selection of several transmitting antennas
[0012] The shortcomings of the above-mentioned existing methods are: based on the channel capacity, it is difficult to determine the total number of transmitting antennas to be selected; the antenna is selected according to the signal-to-noise ratio of the demodulated signal, without considering the improve

Method used

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  • Method for selecting transmitting antenna in space multiplexing multi-input and multi-output system
  • Method for selecting transmitting antenna in space multiplexing multi-input and multi-output system

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Embodiment Construction

[0032] The present invention utilizes the basic assumption that the pilot has the highest demodulation reliability in the wireless communication system, estimates the demodulation error of the received pilot information at the receiving end, and compares the error with the preset noise power threshold to determine State conditions of the corresponding channel, and realize the two goals of determining the number of antennas to be selected as transmitting antennas and specifically determining the selected antennas according to the estimated channel state conditions. Its core idea is to use the worst channel to compare with the preset noise power threshold, if the worst channel can meet the system requirements, then the rest of the channels can also meet the requirements; The corresponding transmit antenna is deleted, and the rest of the channel conditions are judged in a loop until the remaining channels meet the system requirements.

[0033] The present invention will be furthe...

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Abstract

The invention discloses one space multiple input and output system emission antenna selection method, which comprises the following steps: demodulating the received guide frequency information and estimating its error and comparing the error and preset limit to estimate current signal status; according to the front signal channel to determine antenna not satisfying needs and mapping the information to the guide frequency information and feeding back the selection information according to the signal channel status signals; according to the feedback selection information to fulfill the emission signal map and optimization emission.

Description

technical field [0001] The invention relates to a method for selecting a transmitting antenna, in particular to a method for selecting a transmitting antenna in a space multiplexing multiple-input multiple-output system. Background technique [0002] Both the transmitting and receiving ends of a wireless system use multi-antenna units, use the rich spatial multi-dimensional characteristics of the wireless scattering channel, and work in the way of multiple input terminals and multiple output terminals, which can improve the channel capacity of the system in a breakthrough. The MIMO (multiple input multiple output) technology proposed based on the above ideas has opened up a new field for modern wireless communication. It provides future mobile communication systems, especially for high-speed data access services, without increasing the bandwidth. It provides a means that can greatly improve the system data rate and spectrum efficiency in the case of . [0003] The MIMO chan...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
Inventor 耿鹏江海王文杰呙铭志
Owner ZTE CORP
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