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这是本文的第二部分.文中对同轴电缆传输N+N载波系统扩容进行了深入分析.由于传输频率升高,需要采取频率交叉和阶梯预斜技术,因而在作系统噪声分折时也要考虑这一特点.对增音线路系统进行噪声核算表明,3.1km中同轴线路扩容传输3540+3540和3480+3480系统是可以实现的.附录中对同轴N+N系统的非线性噪声积累规律和小同轴作180O+180O扩容传输的可行性作了探讨.
This is the second part of this article.In this paper, the expansion of coaxial cable transmission N + N carrier system is analyzed in depth.As the transmission frequency increases, it is necessary to adopt frequency crossover and staircase pre-skew technology, To consider this feature, the noise accounting of the adding line system shows that 3.1km coaxial line expansion transmission 3540 +3540 and 3480 +3480 system is achievable.Annex Appendix for the N + N system of nonlinear noise The accumulation of law and small coaxial 180O +180O expansion for the feasibility of the transmission were discussed.