基于移动信道中速数据流的高健壮性二元网络传输编码调制方案研究

在第三代及第四代移动通信技术中,通信网内数据存量及流量主要以中速数据为主。但由于移动通信技术的特性,在数据传输过程中,信道干扰因素非常强烈,从而直接导致网络数据传输的可靠性大大的降低。而当前网络编码调制技术主要采用了单一的网络编码矢量量化技术,不仅忽略了信道干扰因素,而且对全部的中速数据采用等级保护模式,在移动信道中速数据传输过程误码率性能不强。对此,本文设计了基于移动信道中速数据流的高健壮性二元网络传输编码调制方案。将信道干扰因素和分级保护思想加以引入,提出了联合最佳准则ROBS-C(The Rule Of Based Source And Channel) 分级保护DLP(Divided Level of Protection)的调制方案,兼顾了量化性能和误码性能两个方面。仿真实验表明：本文方案在低信道扰码的场合下量化性能优良；且在强信道扰码情况下,比单一因素的时候误码率低,从而有效的可以面对实际的移动信道下低 /高信道扰码交替的信道状况,能够更好的适应移动通信的要求。

High Robustness of Binary Coded Modulation Scheme of the Transmission Network Based on Mobile Speed Data Stream Channel

The data communications network within the stock and flow were mainly deepened on medium data speed in the 3G generation and the LTE generation mobile communication technology. But the low reliability of network data transmission was induced by the strong channel interference factor during transmission dates because of characteristics of mobile communications technology. However, the traditional network coding modulation technique to solve the main-vector quantization technology based on single network coding, this technique does not consider the channel interference factors, and the level of protection mode of intermediate data all of the mobile channel, in the medium speed data transmission error rate can not strong. This paper focuses on the robustness of binary network transmission code modulation algorithm based on medium speed data mobile channel flow, the channel interference factors and protection idea were introduced to propose the modulation scheme of ROBS-C criterion DLP scheme, to both the two aspects of quantitative performance. Simulation results show this scheme proposed in this paper had better quantization performance under the condition of low channel scrambling; comparison with scheme based on single factor, the lower symbol error rate was reflected under the condition of high channel scrambling to effectively fit the conditions of alternating movement of low / high channel scrambled channel.