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Signal transmitting and receiving method based on time-division duplexing in radio communication system

A wireless communication system, time-division duplex technology, applied in diversity/multi-antenna systems, space transmit diversity, multiplex communication, etc., can solve the problem that multiple channels cannot be kept independent of each other at any time, and the signal-to-interference-noise ratio of multi-antenna reception Not very high, low efficiency and other problems, to achieve high signal-to-interference (noise) ratio, easy to implement, high transmission efficiency

Inactive Publication Date: 2004-02-11
深圳敦骏科技有限公司
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Problems solved by technology

However, due to the interference of wireless communications, the signal-to-interference-noise ratio of multi-antenna reception is not very high; in addition, since multiple channels of wireless reception cannot be kept independent of each other at any time, in each receiving unit time, There is still relatively large interference between each other, coupled with factors such as mutual coupling between antennas, the method of simultaneous transmission / reception of multiple antennas still has the problem that the efficiency is seriously reduced

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  • Signal transmitting and receiving method based on time-division duplexing in radio communication system
  • Signal transmitting and receiving method based on time-division duplexing in radio communication system
  • Signal transmitting and receiving method based on time-division duplexing in radio communication system

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Embodiment Construction

[0015] In existing multi-antenna systems, the premise of its application is the existence of independent Rayleigh fading channels. Due to the diversity of the actual environment, when the distance between the receiving antennas is half of the carrier wavelength, there may still be a large correlation between the fading channels experienced by the signal. However, for noise, since the incoming azimuth angle of the noise signal is distributed in the entire space from 0 to 360 degrees, in addition, the noise signal in the wireless environment is generally a combination of multiple different signals, therefore, for distances greater than or equal to For two antennas with half the carrier wavelength, the received noise is basically independent of each other.

[0016] Taking two receiving antennas as an example, when the noise received by them is independent of each other, for the transmitting signal of a single transmitting antenna, the received signal on the two receiving antennas...

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Abstract

This invention discloses a method for signal emitting and receiving based on time-division duplex, setting many antennas at the basestation side and mobile station side separately, the said antennas are designed on the principle that noises received on each antenna are mutual independent, thus, the mobile station measures received signals on its own side receive antennas and selects one as the up-line emitting antenna to take it as the emitting antenna at the next up-line emitting time. The base station selects one antenna as the downstream emitting antenna from multiantenna at its side receiving signals from the mobile stations and emits signals to the mobile at the next time, increasing transmission efficiency of high speed data and getting the maximum high S / N ratio.

Description

technical field [0001] The present invention relates to signal transmission and reception methods in a wireless communication system. Background technique [0002] Wireless communication provides the means for people to connect with each other and obtain information anytime and anywhere, so it has been rapidly popularized in recent years. However, in the current wireless environment, due to the requirement of mobility, the directional transmission of wireless signals has certain limitations, which inevitably causes mutual interference between wireless communications of different users. In order to ensure the normal progress of various wireless communications, the use of wireless spectrum is generally subject to strict restrictions and management. In this way, wireless communication cannot have a large bandwidth like wired communication. Therefore, based on the limited available wireless spectrum, how can Increasing the information transmission capability of the wireless com...

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04B7/26H04J3/00
Inventor 孙立新周雷陈月华
Owner 深圳敦骏科技有限公司
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