Fast antenna selection method for united receiving and transmitting end of MIMO system

An antenna selection, transceiver technology, applied in diversity/multi-antenna systems, space transmit diversity and other directions, can solve the problem of mismatching antenna number and requirements, and high computational complexity.

Active Publication Date: 2015-08-12
CENT SOUTH UNIV
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Problems solved by technology

[0004] Aiming at the decoupling algorithm that is close to the optimal channel capacity but slightly more computationally complex when the joint receiver and transmitter are selected, Gorokhov et al. Algorithms that simplify the analysis of the formula are proposed; however, these algorithms need to be run with the same number of antennas at the transceiver end
[0005] Due to the superior performance of intelligent algorithms in solving convex optimization problems, geneti...

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  • Fast antenna selection method for united receiving and transmitting end of MIMO system
  • Fast antenna selection method for united receiving and transmitting end of MIMO system
  • Fast antenna selection method for united receiving and transmitting end of MIMO system

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0053] This embodiment is a fast method for joint antenna selection in a MIMO system, which is applied to such as figure 1 The MIMO communication system shown, in this embodiment N T Take 8, N t Take 3, N R Take 16, Nr takes 4; MIMO system uses 8 transmit antennas to take 3, 16 receive antennas to take 4, by figure 1 The number of radio frequency links is less than the number of antennas, and it is necessary to select antennas that can provide large channel capacity to connect with radio frequency links. The receiving end calculates different channel capacities corresponding to different antenna selection schemes through the channel state information, and adopts the scheme with the largest channel capacity. After the receiving end selection module makes the antenna selection result, it sends the control instruction to the radio frequency link control p...

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Abstract

The invention discloses an antenna selection method for a united receiving and transmitting end of an MIMO system and belongs to the field of wireless communication. The method of the invention can be used for exporting channel capacity, which is expressed by binary-encoded strings, via analyzing a channel capacity formula of the MIMO system by using a thought based on binary system particle swarm optimization, as fitness function of the particle swarm optimization, which simplifies the calculated amount, and the method of the invention simultaneously improves search efficiency by performing population initialization in a cyclic shift way so as to improve the channel capacity. The method of the invention can be used for obtaining higher channel capacity than other suboptimal algorithms while reducing the computation complexity.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a fast method for joint antenna selection in a MIMO system. Background technique [0002] The MIMO (Multi-Input Multi-Output) system configures multiple antennas at the transmitting end and the receiving end to obtain diversity gain and multiplexing gain, so that the system can double the channel capacity and transmission reliability without increasing the bandwidth. However, the MIMO system needs to use radio frequency chains matching the number of antennas, which increases the implementation cost. Fast antenna selection can maintain their advantages while reducing the implementation complexity and hardware cost in practical applications of MIMO systems. [0003] The optimal algorithm for antenna selection is the exhaustive method. This algorithm needs to traverse all possible options. By calculating the channel capacity corresponding to each option, a subset is selected f...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
Inventor 施荣华谢羽嘉董健
Owner CENT SOUTH UNIV
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