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Rate splitting based method for allocating user rates in wireless multiple access channels

A technology of user rate and allocation method, applied in the direction of wireless communication, electrical components, etc.

Inactive Publication Date: 2012-05-02
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For rate-split multiple access with the number of users N (N>2), there is no feasible way to calculate the system parameters of rate-split

Method used

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  • Rate splitting based method for allocating user rates in wireless multiple access channels
  • Rate splitting based method for allocating user rates in wireless multiple access channels
  • Rate splitting based method for allocating user rates in wireless multiple access channels

Examples

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Embodiment Construction

[0071] The present invention is applicable to the given number of sending users, channel noise and sending power array in the Gaussian multi-access channel, and realizes any rate allocation strategy on the boundary of the capacity area by using code rate splitting multi-access technology.

[0072] The strategy of channel resource allocation using rate split multiple access technology is divided into three parts. Firstly, calculate the system parameters of code rate splitting, then configure the transmission parameters of the user terminal according to the obtained code rate splitting coefficient and the size of the obtained virtual user interference and noise, and then control the receiver to control the virtual user according to the order of the interference and noise sum from large to small The sequential decoding order of . According to the above method, the preset rate allocation strategy on the multi-access channel can be realized.

[0073] Specific steps are as follows:...

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Abstract

The invention provides a rate splitting based method for allocating user rates in wireless multiple access channels, which is characterized by firstly computing the parameters of a rate splitting based multiple access communication system, including computing the splitting sequences and the splitting parameters; obtaining the splitting sequences of the user by merging binary trees; splitting the rates of a plurality of users into a series of two-user rate splitting based on the splitting sequences; alternately using the splitting formulas of two kinds of father nodes according to the splitting sequences to compute the splitting coefficients of all the users and the interference noise sum corresponding to the virtual users; and adjusting the code rate at the transmitting end of the user and controlling the successive decoding sequences of the virtual users at the receiving end according to the obtained splitting parameters so as to further realize the preset rate allocation strategy. The method can realize any rate allocation on the boundary of the multiple access channel capacity region, farthest utilize the wireless communication resources, not only reduce coding complexity but also dispense with strict synchronization among the users. In addition, the method is simple and effective and is used for allocating the wireless communication resources.

Description

technical field [0001] The invention belongs to the technical field of wireless communication resource allocation, and relates to a method for realizing rate allocation of a multi-access communication system by using code rate splitting multiple access technology, in particular to a method for calculating parameters of a code rate splitting multiple access system. Background technique [0002] The wireless multiple-access channel model is suitable for many practical application scenarios, such as the uplink of mobile cellular networks. In multiple access channels, multiple users occupy wireless channel resources at the same time, and wireless channel resources are very precious and non-renewable resources, which makes it very important to allocate channel resources reasonably and effectively, and even determines the performance of the entire network. Existing resource allocation methods mainly include three types: time division multiplexing, frequency division multiplexing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08
Inventor 毛小矛仇佩亮
Owner ZHEJIANG UNIV
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