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Multi-user two-way relay communication method based on interleave-division multiple-access technology

A two-way relay, interleaving multiple access technology, applied in radio transmission systems, electrical components, transmission systems, etc., can solve the problems of spread spectrum redundant coding gain, multi-user interference, etc., achieve significant performance gains, and eliminate multiple access Effects of jamming and multiuser jamming

Inactive Publication Date: 2014-08-06
TSINGHUA UNIV
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Problems solved by technology

This method introduces spread spectrum redundancy but does not bring coding gain. In practical systems, multiple access interference (MAI) is introduced because the spread spectrum codewords cannot be ideally synchronized. With the increase of the number of users, the multi-user interference (MUI) the problem is even worse

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  • Multi-user two-way relay communication method based on interleave-division multiple-access technology
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  • Multi-user two-way relay communication method based on interleave-division multiple-access technology

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the following examples are given to further describe the present application in detail.

[0022] Taking a relay node and 16 users, that is, 8 user pairs as an example, two users in a user pair need to communicate.

[0023] The implementation process of the multi-user two-way relay communication method based on interleaved multiple access technology in this application includes:

[0024] In the first stage, 8 different interleavers are used to distinguish 8 user pairs, and the interleaved 8 user pair information sequences are sent to the relay node, and the relay node performs iterative multi-user detection and decoding on the received information sequence , and then the user performs an XOR operation on the information sequence obtained after decoding to obtain an intermediate value. Specifically include the following steps:

[0025] 1) The information sequences of the...

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Abstract

The invention provides a multi-user two-way relay communication method based on an interleave-division multiple-access technology, and belongs to the technical field of wireless communication. The multi-user two-way relay communication method comprises the steps that different interleavers are used for differentiate different user pairs, a user pair information sequence after interleave is sent to a relay node, the relay node conducts iterative multi-user detection decoding on the received information sequence and then conducts XOR operation on the information sequence obtained after user pair decoding, and an intermediate value is obtained; the intermediate value obtained after the XOR operation is broadcast to a user pair, two users of the user pair receive the intermediate value and conduct XOR operation according to information sequences of the users and the intermediate value, so that an information sequence of the opposite side which is in communication with each user is obtained, and the whole communication process is finished. Through the multi-user two-way relay communication method based on the interleave-division multiple-access technology, maximized encoding gain and maximized channel capacity can be obtained, multi-access interference and multi-user interference can be effectively eliminated through an iterative multi-user detection algorithm, and the error rate resistance of a system is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a multi-user two-way relay communication method based on interleaved multiple access technology. Background technique [0002] The existing cellular structure introduces the cooperative communication mode of the relay. While improving the communication quality of the edge cell, it can also increase the coverage of the cell and the coverage of the blind area. There have been a lot of in-depth research results on the unidirectional relay system, but the unidirectional The half-duplex working mode of the relay system will cause the loss of spectral efficiency, and the two-way relay can just make up for this loss. At the same time, compared with the traditional one-way relay, the two-way relay can provide higher spectrum efficiency and power efficiency, so it has received extensive attention. [0003] Two-way relay is a common means of communication. For example, real...

Claims

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Application Information

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IPC IPC(8): H04B7/216H04B1/7107
Inventor 粟欣曾捷李泽娇许希斌刘强
Owner TSINGHUA UNIV
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