Multiple-input multiple-output detector and detection method based on probability calculation

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 technical field of wireless communication, 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 Enter the detection method for the 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 transmission power. sex. Since multiple-input multiple-output (MIMO) technology can provide mobile users with high-quality, high-speed information transmission in a wireless mobile environment, MIMO technology has become the core technology of the fourth generation m...

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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 the prior art, to provide a multi-input multi-output detector based on probability calculation, and to apply the multi-input multi-output detector. Fully parallel detection system composed of output detectors

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