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Multi-input multi-output signal detection method for power line communication

A technology of power line communication and signal detection, which is applied in the field of signal processing, can solve the problems that the interference of pulse noise cannot be effectively suppressed, and achieve the effects of suppressing the interference of pulse noise, reducing the use of memory, and reducing the bit error rate

Active Publication Date: 2013-12-18
DALIAN UNIV OF TECH
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Problems solved by technology

[0033] The MIMO detection algorithm that uses the interference cancellation of simultaneous signal components mainly eliminates the interference between signals from different transmitting antennas, and takes less consideration of the impact of noise interference, so it cannot effectively suppress the interference of impulse noise

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  • Multi-input multi-output signal detection method for power line communication
  • Multi-input multi-output signal detection method for power line communication
  • Multi-input multi-output signal detection method for power line communication

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with accompanying drawing:

[0053] Technical problem to be solved by the present invention

[0054] The existing MIMO signal detection technology has poor performance in the impulsive noise environment, and the bit error rate of the detection result is high, so it cannot be used in the environment with severe impulsive noise such as the power line channel. Therefore, the present invention proposes a MIMO signal detection algorithm capable of effectively suppressing impulse noise for MIMO signal detection of a power line channel.

[0055] Complete technical solution provided by the present invention

[0056] The invention is a linear MIMO signal detection technology proposed aiming at the impulse noise in the power line channel. In the scheme of the present invention, the α-stable distribution is used to describe the impulse noise in the power line channel, the fractional low-order statistic-fraction...

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Abstract

The invention relates to a multi-input multi-output signal detection method for power line communication and belongs to the technical field of signal processing. Before a sending end sends a signal sequence, an iter frame training sequence needs to be sent. Iter is the number of iterations of algorithms. The number of the iterations ranges from 100 to 200. At a receiving end, initialization is performed firstly, namely, wi(0) equals 0, and Pi(0) equals delta I, wherein P is the matrix required in the computing process, I is the unit matrix of N*N, N is the number of receiving antennas and is the unit matrix of 2*2 here, the delta is a positive constant which is large enough, and the delta equals 106 here.

Description

technical field [0001] The invention relates to a multi-input multi-output signal detection method for power line communication, which belongs to the technical field of signal processing. Background technique [0002] With the development of communication technology, the "last mile" access problem has become one of the bottlenecks restricting the wide application of broadband communication. Power Line Communication (PLC) technology has become one of the key technologies for broadband access due to its advantages of no need for rewiring, wide coverage, and convenient connection between user terminals and networks. With the development of high-speed data communication, the physical channel capacity of the PLC channel itself can no longer meet the requirements. Therefore, in recent years, people have introduced MIMO technology into the PLC, and studied the multi-input multi-output (MIMO) in the PLC system. ) technology to increase the communication rate. The existing MIMO tec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
Inventor 陈喆殷福亮耿晓馥
Owner DALIAN UNIV OF TECH
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