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Generalized spatial modulation system receiver detection method combined with threshold decision

A technology of generalized spatial modulation and detection method is applied in the field of receiver detection of generalized spatial modulation system, which can solve the problem of high receiver complexity, and achieve the effects of reducing the number of possible detection and transmission signals, reducing detection complexity, and optimizing detection performance.

Inactive Publication Date: 2013-11-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, when detecting the MIMO receiver based on generalized spatial modulation technology, it is necessary to detect not only the position of the activated transmitting antenna, but also the modulation symbol carried by each activated transmitting antenna. Therefore, in order to obtain the optimal performance, the It is necessary to perform an ergodic search on all possible transmitted signals, and use methods such as maximum likelihood criterion or maximum a posteriori probability criterion for decision detection, so that the complexity of the receiver is very high

Method used

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  • Generalized spatial modulation system receiver detection method combined with threshold decision
  • Generalized spatial modulation system receiver detection method combined with threshold decision
  • Generalized spatial modulation system receiver detection method combined with threshold decision

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[0013] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0014] In order to describe the present invention better, the terms used in the technical solution of the present invention and the generalized spatial modulation system transmitter are introduced first.

[0015] Transmitting Antenna Combination: Refers to the N T Choose N arbitrarily from the root transmitting antenna P A set of combinations of roots, N selected for sending information symbols P The root antenna is called the active transmit antenna, and the unselected one is called the silent transmit antenna.

[0016] Channel matrix: Assuming that each transmit antenn...

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Abstract

The invention discloses a generalized spatial modulation system receiver detection method combined with a threshold decision. Through the combination and sorting of transmitting antennas, a balanced detection algorithm is used to detect a detection transmitting signal under a sorted transmitting antenna combination, whether the detection transmitting signal is reliable or not is detected combined with a threshold decision, once the detection transmitting signal is reliable, the detection transmitting signal can be taken as a final estimation transmitting signal, and only when all detection transmitting signals are not reliable, all detection transmitting signals are needed to be subjected to traversal to select an optimal signal as the estimation transmitting signal. According to the method, through the threshold decision, the number of the searched possible detection transmitting signals can be reduced, thus the detection complexity of a receiver is effectively reduced, and better detection performance is obtained under the condition of low complexity.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and more specifically relates to a receiver detection method of a generalized space modulation system combined with threshold judgment. Background technique [0002] The spatial modulation (Spatial Modulation, SM) technology divides a fixed number of information bits into two parts, one part is used to select the transmitting antenna, and the other part is used to map the constellation symbols, and the mapped constellation symbols are transmitted through the selected transmitting antennas, which are not The selected transmit antenna is silent. Using the SM technology can avoid the problems of inter-channel interference and transmitting antenna synchronization in the MIMO (Multiple-Input Multiple-Output) system. The Generalized Spatial Modulation (GSM) technology can select multiple transmitting antennas, and transmit different constellation symbols on different transmitting antennas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/04
Inventor 杨宗菲李慧蕾肖悦但黎琳李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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