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A Maximization and Rate Channel Pairing Method Based on Maximum Ratio Combining in Relay Networks

A relay network, maximum ratio technology, applied in relay system monitoring, diversity/multi-antenna system, transmission monitoring and other directions, can solve the problem of inability to subdivide the channel pairing gain, and achieve the effect of improving the bit error rate performance

Inactive Publication Date: 2018-11-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the DSTBC system, the relay can achieve full diversity gain without knowing the channel state information of the uplink, so that the channel pairing gain cannot be excavated from the division. Considering the further improvement of the system performance, the channel pairing method is introduced into In MRC-based DSTBC system

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  • A Maximization and Rate Channel Pairing Method Based on Maximum Ratio Combining in Relay Networks
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  • A Maximization and Rate Channel Pairing Method Based on Maximum Ratio Combining in Relay Networks

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Embodiment Construction

[0017] In the following, the present invention will be further clarified with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand various aspects of the present invention. Modifications in equivalent forms fall within the scope defined by the appended claims of this application.

[0018] The channel pairing method of the present invention based on the maximization of the maximum ratio combination of the relay network and the rate includes: performing channel phase elimination on the uplink and downlink channels at the relay end, and at the same time adopting MRC on the symbols transmitted from the uplink channel at the relay end Joint optimization, and finally adopt the method of spatial channel pairing in the downlink channel to further improv...

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Abstract

The invention discloses a channel pairing method based on relay network maximum-ratio combining maximization and rate, comprising the following steps: first, carrying out channel phase elimination on received signals at a relay side; then, carrying out maximum-ratio combining on the processed signals at a relay transmitter; and finally, carrying out space channel pairing for uplink and downlink channels in a second time slot.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and in particular to a channel pairing method based on the maximization and rate of the maximum ratio combination of a relay network. Background technique [0002] In wireless communication systems, how to improve the reliability of system transmission has always been a basic problem that researchers have focused on solving. Distributed Space-Time Code (DSTBC) and Coherent Combining (CC) are two main methods for relay networks to obtain cooperative diversity gain. The DSTBC in the relay network is mainly used to improve the cooperative diversity gain of the system. Although when the number of relays is fixed, DSTBC can obtain the full diversity gain while effectively increasing the transmission code rate of the system, but as the number of relays continues Increase, the transmission code rate of the system will gradually approach 0. In order to effectively solve this problem, phase canc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/155H04B7/08H04B17/40H04B17/391H04B17/336
CPCH04B7/0857H04B7/15585H04B17/336H04B17/391H04B17/40
Inventor 黄晓晖顾晨束锋胡锦松钱振宇崔玉荻周叶桂林卿
Owner NANJING UNIV OF SCI & TECH