中文摘要：

无线网络中使用中继能够改善网络的吞吐量和覆盖范围。由于无线信道的统计特征随着时间和空间变化，当信道特征变化时，基于固定率编码的中继网络将变得低效率或者不可靠。喷泉码是一类新的纠错码，适合于时变信道和多播业务传输。喷泉码适合于应用在无线中继网络中，目的是实现无线信道传输的有效性、可靠性和鲁棒性。

英文摘要：

The use of relays in wireless communication networks can improve both the coverage and throughput of the networks. Since the statistics of wireless channels typically vary with time and space, a relay network based on fixed-rate codes may become inefficient or unreliable as these statistics vary. Fountain codes are a new class of error-control codes and suitable for transmission on time-varying channels and multicast channels. The results that there is a natural fit between relay networks and fountain codes are demonstrated, a wireless relay networks using fountain codes can handle efficiency, reliability and robustness simultaneously.