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Genetic algorithm-based differential multi-user detection method in ultra wide band system

A multi-user detection and genetic algorithm technology, applied in the field of signal detection, can solve the problems of high computational complexity and insufficient BER performance of repeated iterative detection algorithms, and achieve the effect of reducing computational complexity and overcoming BER.

Inactive Publication Date: 2013-09-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a genetic algorithm-based differential multi-user detection method in an ultra-wideband system, which solves the problem of insufficient BER performance of traditional IC and GA multi-user detection algorithms, and solves the problem of high computational complexity of repeated iterative detection algorithms. question

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  • Genetic algorithm-based differential multi-user detection method in ultra wide band system
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  • Genetic algorithm-based differential multi-user detection method in ultra wide band system

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Embodiment Construction

[0034] The implementation of the present invention will now be specifically described in conjunction with the accompanying drawings and specific embodiments.

[0035] refer to figure 1 , figure 1 Multiuser detection with DA structure, ie differential multiuser detection, is shown. Specifically, figure 1 What is shown is a structural block diagram of CEFM-GA-based differential multiplexing detection (ie, CEFM-GA DA). Combine below figure 1 The specific implementation steps of CEFM-GADA proposed by the present invention are further described in detail.

[0036] 1. In the first round of detection, the signal to be detected y (y=[y 1 ,y 2 ,...y K ] T ) through a primary CEFM-GA and an auxiliary CEFM-GA multiuser detector for the first round of detection, respectively. When the signal y to be detected passes through the main CEFM-GA detector, it first passes through a buffer to store its signal value for the next round of detection.

[0037] In this step, the number of ge...

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Abstract

The invention discloses a genetic algorithm-based differential multi-user detection method in an ultra wide band (UWB) system. A complementary error function mutation-based genetic algorithm (CEFM-GA) is combined with a differential algorithm (DA). In the indoor UWB environment, the method overcomes the defect of consistent mutation adopted in the traditional GA, effectively improves the bit error rate (BER) performance of a multi-user detection system, and greatly reduces the calculation complexity of the system, so that the system is simpler and more practical.

Description

technical field [0001] The invention relates to a signal detection technology in an ultra-wideband (UWB) system, in particular to a low-complexity multi-user detection method based on a genetic algorithm (GA). Background technique [0002] With the rapid development of wireless communication technology and the promotion of data services, short-distance wireless communication presents a huge development potential. In recent years, short-distance wireless communication technology has developed rapidly. Concepts such as wireless sensor network, wireless personal area network (WPAN) and wireless body area network (WBAN) have been proposed and received extensive attention, setting off an upsurge in short-distance wireless communication. . It can be said that short-distance wireless communication has become an important development and application direction of future wireless communication. [0003] UWB technology has the characteristics of high transmission rate, low power cons...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7105
Inventor 朱光喜吴伟民孔政敏钟梁
Owner HUAZHONG UNIV OF SCI & TECH