Uplink signal reception method and system in MIMO system

A signal and receiving antenna technology, which is applied in the field of uplink signal receiving in multi-user MIMO systems, can solve problems such as strong interference signals and low receiving signal-to-noise ratio, and achieve the effect of improving signal-to-interference ratio and reducing complexity

Inactive Publication Date: 2010-06-16
PEKING UNIV
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Problems solved by technology

[0006] The use of omnidirectional antennas does not take into account the above factors, which will lead to lower receiving signal-to-noise ratio and stronger interference signals, so that the base station receiver needs a high-precision channel estimation algorithm and a complex multi-user detection algorithm to ensure the system. throughput

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  • Uplink signal reception method and system in MIMO system
  • Uplink signal reception method and system in MIMO system
  • Uplink signal reception method and system in MIMO system

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] The structural block diagram of the uplink system in the multi-user MIMO system of the technical solution of the present invention is as follows figure 2 As shown, the system includes a user processing module and an omnidirectional transmitting antenna module at the user transmitter end, and includes a receiving antenna unit module with adjustable spatial response, a multi-user antenna spatial response control module, and a base station processing module at the base station receiver end; , the multi-user antenna spatial response control module is divided into two sub-modules: the weight coefficient determination sub-module and the weighted combination sub-module, s...

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Abstract

The invention relates to the signal reception of an uplink in a multi-user MIMO system. The invention provides an uplink system and a signal reception method thereof in a multi-user MIMO system. The signal reception method comprises the following steps of: generating a user signal to be transmitted to a base station by a user processing module; transmitting the signal transmitted by the user processing module to a wireless channel by an omnidirectional transmitting antenna module; receiving all the signals within the range of the arrival direction of the specific signal by a receiving antenna unit module; carrying out airspace filtering on the receiving signal of each array element of each antenna unit by a multi-user antenna space response control module; and carrying out channel estimation, multi-user detection, demodulation and decoding aiming at the airspace filtering results of users by a processing module of the base station and realizing multi-user data separation. The invention can enhance the signal interference ratio of the input end of a receiver of the base station and lower the complexity of the post-treatment of channel estimation, multi-user detection and the like at the position of the base station.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to uplink signal reception in a multi-user MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) system. Background technique [0002] The next-generation wireless communication system will provide users with higher data transmission rates and better service quality, and the system capacity will also be greatly improved. one of the important goals. The MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) system can adapt to this development requirement, so it has developed rapidly in recent years. The MIMO system uses multiple antennas to transmit and receive signals at the transmitting end and the receiving end, respectively, to obtain space diversity and multiplexing gain, so that the system capacity can be greatly increased and the transmission link can be significantly improved without additional power consumption and band...

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Application Information

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IPC IPC(8): H04B7/08H04B7/06
Inventor 尚勇史双宁张小欣赵婷婷赵玉萍
Owner PEKING UNIV
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