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Blind detection algorithm based on m2m communication spectrum sharing and coexistence

A technology of spectrum sharing and blind detection, applied in transmission modification based on link quality, devices dedicated to receivers, machine-to-machine/machine-type communication services, etc., which can solve problems such as unknowns and high bit error rates

Active Publication Date: 2021-12-14
NANJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

However, the above scheme assumes that the transmission channel is known when the system is designed, so when the influence of the channel is removed, the bit error rate of recovering the traditional user signal is relatively high
However, the actual communication system transmission channel is time-varying and mostly unknown

Method used

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  • Blind detection algorithm based on m2m communication spectrum sharing and coexistence
  • Blind detection algorithm based on m2m communication spectrum sharing and coexistence
  • Blind detection algorithm based on m2m communication spectrum sharing and coexistence

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Embodiment Construction

[0083] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0084] Such as figure 1 As shown, the present invention proposes a blind detection algorithm based on M2M communication spectrum sharing and coexistence, which is characterized in that it includes the following steps:

[0085] Step SS1: constructing a traditional user overcomplete model and an M2M communication sparse model;

[0086] Step SS2: solving the M2M transmission signal through convex optimization;

[0087] Step SS3: constructing a traditional user receiving data matrix;

[0088] Step SS4: Singular value decomposition of the received data matrix in the step SS3;

[0089] Step SS5: Setting weight matrix W=I N -Q, where I N is an N×N-dimensional identity matrix,

[0090] Step SS6...

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Abstract

The present invention discloses a blind detection algorithm based on M2M communication spectrum sharing and coexistence, including the following steps: Step SS1: Constructing a traditional user overcomplete model and an M2M communication sparse model; Step SS2: Convex optimization to solve the M2M transmission signal; Step SS3: Constructing a traditional user Receive data matrix; step SS4: perform singular value decomposition of the received data matrix in step SS3; step SS5: set weight matrix; step SS6: select activation function of Hopfield neural network, and perform Hopfield neural network iterative operation. For the first time, the present invention uses the blind detection of Hopfield neural network to restore the recovery of traditional users in M2M communication. According to the overcomplete model of traditional users and the sparse model of M2M equipment, the transmission signal of M2M equipment is obtained by convex optimization, and the state equation is iterated: each iteration When entering the Hopfield neural network, it is verified by simulation that under the same conditions, the bit error rate of the present invention is better than the method for recovering traditional user signals under the assumption that the channel is known.

Description

technical field [0001] The invention relates to a blind detection algorithm based on M2M communication spectrum sharing and coexistence, and belongs to the technical field of communication signal processing. Background technique [0002] The support of M2M communication will be an important part of the communication system, especially the 5G cellular system, which puts forward higher requirements on the adaptability of communication signals. [0003] Literature [Xiaohua Li, Jian Zheng, Mingjian Zhang. "COMPRESSIVE SENSING BASEDSPECTRUM SHARING AND COEXISTENCE FOR MACHINE-TO-MACHINE COMMUNICATIONS," International Conference on Acoustics Speech and Signal Processing (ICASSP), IEEE, 2017:3604–3608.] Introduction up A new spectrum sharing scheme: a large number of dispersed M2M devices share the same channel with traditional communication users such as cellular users. When the traditional user continues to transmit, the M2M device directly transmits on this channel without too ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04B17/391H04L1/00H04L25/02H04L27/34
CPCH04B17/391H04L1/0038H04L25/0238H04L27/3483H04W4/70
Inventor 张昀李冰蕊曹健杨杰于舒娟
Owner NANJING UNIV OF POSTS & TELECOMM
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