CMMB超理论间距SFN设计的研究——CMMB下一阶段建网策略探讨

Study on Designing of Unconventional CMMB SFN:Discuss of Future Tactic of CMMB SFN

针对CMMB常规单频网组网所存在的一些突出问题,提出CMMB超理论间距单频网以及CMMB HSFN这两种组网策略。在对常规单频网分析的基础上,总结出CMMB超理论间距单频网设计的理论基础,并认为延时与同频干扰比(CIR)是设计这种单频网时需重点考虑的两个因素,进而对CMMB单频网进行超理论间距组网的可行性与工程设计、CMMB HSFN组网等进行了探讨。

For some outstanding problems that existing in conventional CMMB SFN, unconventional CMMB SFN and CMMB HSFN are proposed in this paper. And on the basis of conventional SFN analysing, the theoretical basis of unconventional CMMB SFN designing is summarized, in which both time-delaying and Co-channel Interference Rate （CIR） should be mainly considered. Then, the feasibility and engineering design of unconventional CMMB SFN, and construction of CMMB HSFN are also discussed.