Probability calculation-based multiple input multiple output detector and detection method

A probabilistic calculation and multi-input technology, which is applied in the direction of using signal quality detectors for error detection/prevention, baseband system components, diversity/multi-antenna systems, etc., can solve problems such as large computational load and complex structure of MIMO detectors

Active Publication Date: 2014-04-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the conventional MCMC algorithm-based MIMO detector with a large amount of computation and complex structure existing in t...

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  • Probability calculation-based multiple input multiple output detector and detection method
  • Probability calculation-based multiple input multiple output detector and detection method
  • Probability calculation-based multiple input multiple output detector and detection method

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[0031] The present invention will be further described in detail below in combination with test examples and specific implementations. However, it should not be understood that the scope of the above-mentioned subject of the present invention is limited to the following embodiments, and all technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0032] reference figure 1 , The multiple-input multiple-output detector based on probability calculation listed in this embodiment includes three random sequence generators, namely a first random sequence generator 103, a second random sequence generator 108, and a third random sequence generator 109; One matrix QR decomposer 104; two probability complex multipliers, namely the first probability complex multiplier 112 and the second probability complex multiplier 119; the Gibbs sampling update unit 113; the log likelihood ratio (LLR) calculation unit 115.

[0033] The input sign...

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Abstract

The invention discloses a probability calculation-based multiple input multiple output detector, which comprises a matrix QR composer, the matrix QR composer is respectively connected with two random sequence generators, the two random sequence generators are respectively connected with a probability complex multiplier, one of the probability complex multipliers is connected with a Gibbs sampling update unit, and both the other probability complex multiplier and the Gibbs sampling update unit are connected with a log-likelihood ratio calculation unit. Because the multiple input multiple output detector uses probability calculation to carry out the MCMC (Markov chain Monte Carlo) algorithm, the complexity of operation is greatly decreased, the transition probability of the Markov chain in the MCMC algorithm is increased, and the problem of locking under a high signal-to-noise ratio is solved. A sliding window sequence generation method is utilized to carry out Gibbs sampling update, so the length of a probability sequence is reduced. When the multiple input multiple output detector is applied to construct a full-parallel detector, a high throughput rate can be achieved with the full-parallel mode.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, and in particular to a multiple input multiple output (Multiple Input Multiple Output, MIMO) detector based on probability calculation, and a fully parallel detection system composed of the multiple input multiple output detector, and multiple The detection method of the input multiple output detector. Background technique [0002] The MIMO communication system uses multiple antennas at both ends of the wireless link to receive and transmit signals at the same time, which can fully exploit space resources and double the capacity and reliability of the communication system without increasing spectrum resources and transmit power. Sex. Because multiple-input multiple-output (MIMO) technology can provide mobile users with high-quality and high-rate information transmission in a wireless mobile environment, MIMO technology has become the core technology of fourth-generation mobile...

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Application Information

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IPC IPC(8): H04B7/08H04L1/20H04L25/03
Inventor 胡剑浩陈杰男周将运
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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