Relay code construction method for cooperative communication system
A technology of cooperative communication and construction method, applied in the direction of diversity/multi-antenna system, space transmit diversity, etc., can solve problems that have not been researched, have not been researched, and cannot determine the best performance of cooperative communication systems
Inactive Publication Date: 2013-11-06
PLA UNIV OF SCI & TECH
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However, this scheme does not study whether this XOR coding is optimal, that is, it is impossible to determine whether this method can make the cooperative communication system achieve the best performance; in addition, for a more general cooperative communication system, if there are multiple relay nodes When there are multiple source nodes, what kind of encoding method should be adopted by the relay node to obtain the best system performance has not been studied
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[0028] First, the terms used in convolutional code encoders in cooperative communication systems are explained, such as figure 1 Shown: k is the number of input sequences of the convolutional code encoder, n is the number of output sequences of the convolutional code encoder, v i Be the length of the i-th shift register in the convolutional code encoder with k input sequences, i=1, 2,..., k, is the overall constraint length of the convolutional code encoder, and the code rate R=k / n convolutional code encoder with the overall constraint length v is called (n, k, v) convolutional code encoder.
[0029] Collaborative communication systems such as figure 2 Shown: there is at least one source node S, at least one relay node R and one destination node D in the cooperative communication system. The cooperative communication system can be divided into two sub-channels: the broadcast channel from the source node S to the relay node R and the destination node D; the multiple access ...
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The invention relates to a relay code construction method for a cooperative communication system, which comprises the following steps of: determining an optimal convolutional code according to the number of source nodes and the number of input links of a destination node in the cooperative communication system and a system decoding requirement; and reversely determining a code construction scheme of a relay node in the cooperative communication system through the optimal convolutional code, and constructing a relay code. By the method, the problem of coding the relay node in the cooperative communication system is solved; and for the given cooperative communication system, the optimal code construction scheme of the relay node is determined through the optimal convolutional code, so that the given cooperative communication system achieves optimal performance.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, relates to cooperative wireless communication, and specifically relates to a relay coding construction method of a communication system, which is used for constructing optimal coding of a relay node. Background technique [0002] Cooperative communication is an important way in wireless communication. Under the premise of not changing the existing system communication system and the number of equipment antennas, cooperative communication technology uses the relay function between terminals to construct a virtual multiple-input multiple-output (MIMO) system, which greatly improves the performance and capacity of the system. The field of foreign military and civilian communications has been highly valued. [0003] Jaemin Han of South Korea proposed a relay XOR coding scheme in a three-node cooperative communication system in the document "A Simple Technique to Enhance Diversity Orde...
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IPC IPC(8): H04B7/06
Inventor 高媛媛杨保峰苏世彬沈越泓臧国珍郭明喜黄葆华魏以民张伟明陈丽花张宏苏徐坤张亚军江天明房务将龙彦汕江顺
Owner PLA UNIV OF SCI & TECH