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Vertical layered space-time signal detection method based on M-elite evolution algorithm

A technology of signal detection and vertical layering, which is applied in the field of communication, can solve the problems of high complexity of OSIC method, high computational complexity, and large performance loss, and achieve the effect of superior detection method and good performance of simulation experiment

Inactive Publication Date: 2012-08-08
XIDIAN UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Its complexity is significantly lower than that of ML, but the complexity of the OSIC method is still very high, about o(T 4 ), where T is the number of transmit antennas
[0007] From the introduction of various traditional detection methods above, it can be seen that the method with good detection performance has high computational complexity, while the method with low computational complexity has relatively large performance loss.

Method used

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  • Vertical layered space-time signal detection method based on M-elite evolution algorithm
  • Vertical layered space-time signal detection method based on M-elite evolution algorithm
  • Vertical layered space-time signal detection method based on M-elite evolution algorithm

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Embodiment Construction

[0034] For the concrete problem of V-BLAST signal detection, the signal detection method based on M-elite evolutionary algorithm of the present invention is in figure 1 It is performed in the existing V-BLAST system as shown, the number of transmitting antennas in this system is T, the number of receiving antennas is R, and BPSK modulation is adopted. Let the length of the transmission data frame be L, the dimension of the bit matrix sent by each data burst is T×L, and the matrix is ​​defined as B = { [ b 1 ( 1 ) , b 1 ( 2 ) , · · · b 1 ( L ) ] ; · · · ; ...

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Abstract

The invention discloses a method for vertical layered space-time signal detection based on M-elite evolutionary algorithm relating to the technical field of communication. The invention adopts the steps that (1) receiving row signals; (2) setting the detection termination condition, giving operation parameters, randomly generating an initial population, and calculating population fitness; (3) sequencing the initial population, and dividing the initial population into an elite population and an ordinary population; (4) judging the termination condition, if satisfied, completing detection on current row signals, and outputting detection signals to execute (7), otherwise, executing (5); (5) selecting a father generation individual from the elite population and the ordinary population to generate an offspring individual, and calculating the fitness; (6) utilizing the offspring individual to update the father generation individual, and returning to (4); (7) if no other signals to be detected exists, completing the detection, otherwise, returning to (1). The method has the advantages of low complexity and favorable detection performance, and is used for signal detection to a vertical layered space-time system in fourth generation mobile communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a vertical layered space-time V-BLAST signal detection method, which can be used for signal detection of the fourth generation mobile communication. Background technique [0002] In order to improve system capacity, the fourth-generation wireless broadband mobile communication system will adopt multiple-input multiple-output MIMO technology, that is, multiple antennas are placed at the base station and multiple antennas are placed at the mobile station, and MIMO is formed between the base station and the mobile station. communication link. MIMO technology has become one of the key technologies in the field of wireless communication. With the increase of the number of antennas used, the complexity of MIMO technology implementation is greatly increased, thereby limiting the number of antennas used, and the advantages of MIMO technology cannot be fully utilized. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L1/00H04B17/00
Inventor 慕彩红焦李成刘逸钟桦王爽缑水平马文萍
Owner XIDIAN UNIV