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Design method of filter coefficient in filter-and-forward relay network

A filter coefficient, relay network technology, applied in the direction of impedance network, digital technology network, electrical components, etc., can solve problems such as inability to achieve the effect of optimal design

Inactive Publication Date: 2015-01-07
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology

However, due to the special structure of the channel capacity maximization problem in the filter-before relay network, the traditional weighted mean square error minimization algorithm cannot be directly applied to the solution of the channel capacity in the filter-before relay network
Therefore, it is impossible to optimize the design of filter coefficients based on the principle of maximizing channel capacity.

Method used

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  • Design method of filter coefficient in filter-and-forward relay network
  • Design method of filter coefficient in filter-and-forward relay network
  • Design method of filter coefficient in filter-and-forward relay network

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Embodiment Construction

[0021] Exemplary embodiments of the present invention will be further described and described in detail below in conjunction with the accompanying drawings.

[0022] like figure 1 As shown, a design method of filter coefficients in the filter forward relay network. The filter forward relay network mentioned in the present invention refers to a half-duplex multi-channel relay wireless communication network, which is composed of a transmitter, a relay node equipped with a filter and a receiver. All channels from the transmitter to the relay node and from the relay node to the receiver are flat fading wireless communication channels. Each relay node is equipped with a finite-length unit impulse response (FIR) filter, which is used to compensate the influence of the flat fading channel on the relay node. figure 1 The superscript "*" refers to the conjugate of complex numbers.

[0023] According to the forward filtering protocol (FF), all relay nodes are equipped with finite-len...

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Abstract

The invention aims to provide a design method suitable for a filter coefficient in a filter-and-forward relay network, relates to the technical field of wireless communication relay transmission, and aims to obtain optimal design of the filter coefficient in the filter-and-forward relay network by following a channel capacity maximization principle. The solution of a channel capacity maximization problem is transformed into the solution of a weighted mean square error minimization problem of a receiver in a virtual channel by constructing the virtual channel between a transmitter and the receiver, so that optimal design of the filter coefficient in the whole filter-and-forward relay network is obtained. A good theoretical basis is laid for the design of the filter coefficient, the processing of data and the allocation of resources in the filter-and-forward relay network.

Description

1. Technical field: [0001] The invention relates to the technical field of wireless communication relay transmission, in particular to a method for designing filter coefficients in a filter forward relay network. 2. Background technology: [0002] Cooperative beamforming technology is based on the original topological network structure through multi-user cooperation to improve system power efficiency and utilization of wireless spectrum resources. It is a new technology that utilizes geographically dispersed single-antenna wireless relay nodes to achieve space diversity. It solves the problem that a wireless terminal cannot obtain space diversity by installing multiple antennas due to limitations in communication equipment size, transmission power, and system cost. At the same time, through the efficient multiplexing of multi-dimensional resources such as time, space, and frequency in the wireless communication system, cooperative beamforming communication technology can su...

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Application Information

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IPC IPC(8): H03H17/02
Inventor 史清江陈力
Owner ZHEJIANG SCI-TECH UNIV
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