一种协作网络编码方案的平均误码率分析

Average BER Analysis of Cooperative Network Coding Scheme

将协作分集与网络编码的优势相结合,提出协作网络编码的概念。针对一种协作网络编码方案,分析不同的译码方式的性能,比较不同接收方法在大信噪比下的性能界。结果表明,该模型下的分集阶数为2,方法1的接收性能要优于方法2的接收性能。如果网络编码的参数线性无关,则不同的参数对系统误码性能中的编码增益影响较大,但不会影响分集阶数。

The Cooperative diversity and Network Coding（NC） have shown their advantages in wireless communication. In order to combine the superiority of these two techniques, the concept of cooperative NC is proposed. This paper discusses one type of cooperative network coding model, and analyzes the performance of two difference decoding methods. It compares the Bit Error Rate（BER） bounds of two different receiving methods at large Signal Noise Ratio（SNR） regime. The result shows that the diversity order of this model is two, and the receiver performance based on decoding method 1 is better than which based on the method 2. If the NC parameters are linear independence, different parameters affect only the coding gain not the diversity order.