A non-coherent mimo communication system and communication method

A communication method and technology of a communication system, applied in the direction of transmission system, multi-carrier system, frequency modulation carrier system, etc., can solve problems such as weak anti-fading ability and limited performance, and achieve good communication performance, lower requirements, and lower complexity Effect

Active Publication Date: 2020-10-13
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is the technical problem of limited performance, weak anti-interference and anti-fading ability existing in the prior art

Method used

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  • A non-coherent mimo communication system and communication method
  • A non-coherent mimo communication system and communication method
  • A non-coherent mimo communication system and communication method

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Embodiment 1

[0042] This embodiment provides a non-coherent MIMO communication system, such as figure 1 , including a source, a space-time coding unit connected to the source, a waveform mapping unit connected to the space-time coding unit, a transmitter connected to the waveform mapping unit, the transmitter is connected to the receiver through an N×M antenna, and the receiver The back end is connected with the FMCW-BOK phase detection unit, the FMCW-BOK phase detection unit is connected to the channel estimation unit, and the space-time decoding unit is connected to the information sink. Multi-antenna MIMO using BLAST space division multiplexing coding

[0043]Among them, in the communication system of this embodiment, the links that have been disclosed in the prior art such as multi-antenna radio frequency, intermediate frequency, and synchronization are omitted. Except for the waveform mapping, FMCW-BOK modulation, and FMCW-BOK phase detection unit, the other Multi-antenna communicati...

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Abstract

The invention relates to a non-coherent MIMO communication system and a communication method thereof for solving the technical problems of weak anti-fading capability and poor performance. By adoptingbinary orthogonal keying (BOK) modulation composed of upper and lower slope frequency modulation signals in a frequency modulation continuous wave (FMCW) signal, and performing BOK phase demodulationat a receiving end, the random phase non-coherent detection in an MIMO environment is achieved in cooperation of BLAST (layered space-time code) detection in MIMO, and the non-coherent communicationcapacity is improved in twofoldness by multiple receiving and sending antennas. Although an MIMO channel matrix needs to be estimated in the method, the matrix is in the form of a real matrix, so thatthe complexity of channel estimation is reduced. The communication capacity can be effectively improved in a fading channel in which the phase change is fast or the phase change is difficult to estimate.

Description

technical field [0001] The invention relates to the field of MIMO communication, in particular to a non-coherent MIMO communication system and a communication method. Background technique [0002] Due to its insensitivity to phase changes caused by wireless fading channels, non-coherent communication is suitable for some communication environments where the phase changes rapidly, or the phase is highly random and difficult to estimate. For example, frequency shift keying signal (FSK), amplitude keying signal (ASK), linear frequency modulation signal (LFM), differential phase shift keying signal (DPSK), etc. are generally suitable for non-coherent demodulation methods. It is widely used in scattered communication such as VHF and UHF, as well as other communication applications in fading and interference environments. MIMO wireless communication is the key technology of the fourth and fifth generation mobile communication. On the one hand, the anti-fading and anti-interferenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04L27/32H04L27/02H04L27/10
CPCH04B7/0413H04L27/02H04L27/10H04L27/32
Inventor 郑霖仇洪冰乔新宇杨超汪震邓小芳林基明刘争红李燕龙
Owner GUILIN UNIV OF ELECTRONIC TECH
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