Calibration method to achieve reciprocity of bidirectional communication channels

A calibration method and channel technology, which is applied in the field of reciprocity of two-way communication channels, can solve the problems of occupying transmission resources, etc., and achieve the effect of ensuring reciprocity and novelty.
CN1910879AInactive Publication Date: 2007-02-07TELEFON AB LM ERICSSON (PUBL)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TELEFON AB LM ERICSSON (PUBL)
Publication Date
2007-02-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a method and arrangement to enhance the communication performance in wireless communication systems. The method of the invention provides a method of calibrating at least one first radio node in a wireless communication network. The communication network comprises at least a first radio node and a second radio node, which can be arranged to be in radio communication with each other. The calibration method is based on that at least one representation of radio channel characteristics, which has been exchanged from one radio node to the other. Whereby inaccuracies and differences in transmit receive chains are compensated and channel reciprocity can be used.
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Description

field of invention

[0001] The invention relates to a method and device for improving communication performance in a wireless communication system. In particular, the invention relates to reciprocity of two-way communication channels. Background of the invention

[0002] The requirements for traffic capacity, coverage and reliability in wireless communication systems appear to be constantly increasing. A bottleneck in traffic capacity is the limited spectrum that can be used for communication purposes, this limitation is physical (only part of the spectrum is suitable for communication and the information content of each frequency and time is limited, and compositional), the spectrum Useful parts of the will be used for many purposes, including: television and radio broadcasting, non-public communications such as aircraft communications and military communications, and public wireless communications such as GSM, third generation networks (3G), wireless local area networks (W...

Claims

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