Multi-antenna communication method for time division duplexing mode frequency division multiplexing system

Abstract

A multi-antenna communication method of a frequency division multiplexing system of a time division duplex is characterized in that a generalized beam area is arranged in a downstream area of a unit frame; the generalized beam area is divided to M plus N generalized beam subsections in a frequency domain, and a pilot channel which is composed of a subcarrier or a plurality of subcarriers is arranged in each generalized beam subsection; a pilot channel to which a pre-coding vector UI conducts the pre-coding is sent by a base station in the I generalized beam subsection; wherein, M of the pre-coding vector UI are different MIMO pre-coding vectors which are used in a large-angle expand channel and based on the latent beam forming, N of the pre-coding vector UI are pre-coding vectors which are used in a small-angle expand channel and based on the beam forming direction, and pre-coding vector index is I is equal to 1, 2,..., M+N; and the frequency division multiplexing system is a single carrier or multi-carrier transmission system which is based on a frequency division multiplexing technology.

Description

technical field [0001] The present invention relates to a multi-antenna communication method of a time-division duplex frequency division multiplexing system, in particular to a multi-antenna communication method of a time-division duplex single-carrier or multi-carrier communication system based on orthogonal frequency division multiplexing technology method. Background technique [0002] People's increasing demand for wireless communication technology is a huge driving force for the development of wireless communication technology. The most widely used wireless communication system at present is the cellular mobile communication system. Its complex and changeable channel conditions and people's strict requirements on the mobile communication system pose a great challenge to the cellular mobile communication technology. [0003] The current effective way to solve this challenge is the combination of multi-carrier transmission technology and multi-antenna technology. Curre...

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Problems solved by technology

[0008] Traditionally, when designing a multi-antenna system, the system may choose one or several of the multi-antenna technologies Beamforming, SDMA, TxD / RxD, SU-MIMO, and MU-MIMO. Each technology is designed separately, and various multi-antenna The multi-antenna parameters such as the precoding vector used in the technology cannot be uniformly selected and processed according to the channel quality information, which greatly increases the system complexity and reduces the system flexibility.

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