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A joint power allocation and relay grouping method in a multi-antenna ping-pong relay system

A joint power allocation and relay system technology, applied in the field of joint power allocation and relay grouping, can solve the problem that the channel is not stable and uniform

Active Publication Date: 2020-01-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of wireless communication, due to its special wireless electromagnetic wave transmission mode, the channel is often not stable and uniform

Method used

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  • A joint power allocation and relay grouping method in a multi-antenna ping-pong relay system
  • A joint power allocation and relay grouping method in a multi-antenna ping-pong relay system
  • A joint power allocation and relay grouping method in a multi-antenna ping-pong relay system

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Embodiment Construction

[0067] The transmission process of the ping-pong relay system based on analog network coding is shown in Figure 1. Before the transmission starts, the statistical channel state information in the network is first collected, that is, the variance from the base station to each relay station, between each relay station, and from the user terminal to each relay station, so as to perform power allocation at the transmitting end and joint optimization of relay grouping. After that, before the transmission of each time slot, the base station broadcasts the training sequence, and each relay station obtains the channel gain from the base station to it, and then the user terminal broadcasts the training sequence, and uses the channel reciprocity, and each relay station obtains the channel gain from itself to the user terminal , and start the transfer. Specific steps are as follows:

[0068] 1.1), before transmission, select a number of relays from all relay station groups and group the...

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Abstract

The invention discloses a joint power distribution and relay grouping method in a multi-antenna ping-pong relay system. Through joint optimization of relay grouping and a power allocation matrix of a transmitting terminal, the effect of maximizing system transmission rate under the condition that base station total power and average transmission power of each relay station are determined is achieved. The multi-antenna ping-pong relay system based on analog network coding prevents half-duplex loss of system throughput; and meanwhile, through joint optimization of relay grouping and power allocation of the transmitting terminal, the system throughput can be further improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a joint power distribution and relay grouping method in a multi-antenna ping-pong relay system. Background technique [0002] While the development of science and technology has promoted the development of wireless communication technology, it has also brought greater demand for communication services. With the rapid growth of business demand and the number of access devices, traditional wireless communication systems have been unable to meet the demand. [0003] The use of MIMO technology is an important channel to solve the problem of improving the communication rate of the system. The so-called MIMO technology is to use the diversity and multiplexing gain of multiple antennas in the transmission system to improve the rate and stability of the transmission system. Ping-pong relay algorithm is also a method to improve the communication rate of the system. In the traditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/12H04W40/22H04W52/24H04W52/26H04W52/46
CPCH04W40/12H04W40/22H04W52/241H04W52/267H04W52/46Y02D30/70
Inventor 张昱苏长然彭宏施建飞李枫华惊宇
Owner ZHEJIANG UNIV OF TECH