采用分组纠错编码的多接入传输分集方法

A Method of Multi-Radio Transmission Diversity with Packet Level Forward Error Correction

针对异构无线网络,提出一种基于前向纠错(FEC)编码的多接入传输分集方法,以获取多接入分集增益.该方法将前向纠错编码与并行多接入传输进行联合设计,编码后的分组包根据传输条件在不可恢复概率最小的条件约束下,动态地分配到多个可用接入链路上,不仅有效利用了多接入传输分集(MRTD)带来的数据可靠性,还保证了系统的有效吞吐量.性能分析及仿真表明,在信道状况较差的条件下,本方法在传输可靠性及有效性方面有较好的性能.

For heterogeneous networks,a method of multi-radio transmission diversity is proposed in order to exploit the multi-radio access diversity gain.The packet level forward error correction（FEC） is integrated with multi-radio transmission at sender.In order to exploit the considerable multi-radio transmission diversity（MRTD） gain and provide the efficiency of system throughput, the coded packet is adaptively allocated to each available radio access according to minimizing the probability of irrecoverable loss at receiver. The analysis and simulation on its performance are proven that the proposed scheme has optimal transmission reliability and efficiency especially in the terrible channel condition.