Data Exchange of Relay Transmission and Information Scheduling in Shared Networks

Xiyuan Wang,Yong Wang,Yihao Qi

doi:10.1109/access.2019.2960820

Xiyuan Wang, Yong Wang + Show 1 more

Open Access

https://doi.org/10.1109/access.2019.2960820

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Abstract

With the diversification of the kinds of wireless transmission service, the transmission rate and reliability of wireless communication have been demanded sharply. The shortage of resources of spectrum has become continuously prominent. These are bottlenecks to restrict the development of wireless communication. The current multi-antenna cooperative relay communication system can’t sense complex communication scenes agilely, and adjust the strategy of interference suppression according to the signal characteristics adaptively, and optimize the resource of the system dynamically. Moreover, the degree of freedom and transmission system reliability should have been further improved. Aiming at the above problems, this paper extracts the features of the combined signal from different degrees of freedom, considering the influence and effect of the distribution characteristics of the signal on its separability, and signal spatial structure to enhance the ability to adapt to complex environmental interference. It explores multiple interactive cooperative transmission scheduling to optimize the wireless resource dispatching and new network coding jointly, and get a unified multi antenna relay transmission processing standards and to improve the efficiency of information transmission. It carries out theoretical studies of interference coordination algorithms which can acquire higher forwarding efficiency at relay in the view of energy efficiency and spectral efficiency.

Highlights

Due to the broadcast and overlay characteristics of wireless transmission media, interference is the main obstacle to reliable communication in multi-user wireless networks [1], [2]
Traditional methods suppress interference by providing exclusive access to some wireless resources for each user, such as frequency division multiple access (FDMA) [3] and time division multiple access (TDMA) [4]
This paper focuses on improving the interference utilization and interference management capability of MIMO multi-way relay cooperative communication system

Summary

INTRODUCTION

Due to the broadcast and overlay characteristics of wireless transmission media, interference is the main obstacle to reliable communication in multi-user wireless networks [1], [2]. Spatial alignment of the signals of the two users is carried out to facilitate network coding and joint decoding This theory looks at interference from a new perspective: it does not ‘‘blindly’’ suppress interference, but more ‘‘intelligently’’ utilizes interference, forming a meaningful flow of information. The spatial freedom degree redundancy caused by the number of additional antennas can be used to optimize the precoding vectors in the null space of signal alignment. The key idea of the signal space alignment for an encryption message is that all users cooperatively design precoding vectors for transmitting a message so that the relay can receive a proper encoding message chain. In D2D cellular network, the relay locally exchanges the data for co-channel transmission of wireless resource-constrained micro cells

RELAY COOPERATION MODEL

CONSTRUCTION OF COMPRESSIVE MATRIX P

RECEIVING EXPECTED DATA

SIGNAL SPACE ALIGNMENT DIRECTION RECONSTRUCTION

SIMULATION AND ANALYSIS

CONCLUSION