MF-TDMA体制下载波信道管理

Frequency Channel Management in MF-TDMA

提出了一种在多频时分多址(MF-TDMA,Multi-Frequency Time Division Multiple Access)体制下应用不同调制方式的差分相移键控提供保证服务质量连接的载波信道管理方法。问题分成两个部分——资源的计算和资源的分配。在资源计算阶段,计算保证要求误码率和数据传输速率所需的最小时隙数,误码率直接受链路参数影响,采用马尔科夫模型巧妙地预测连接期间最坏情况下的波动。在资源分配部分,提出了一种预约信道优先算法,通过比较具有比传统分配算法更好的性能。

This paper discusses the problem of providing guaranteed QoS connections over a MF-TDMA system that employs differential phase-shift keying with various modulation modes.The problem can be divided into two parts – resource calculation and resource allocation.In the resource calculation phase,the minimum number of timeslots required to provide the desired level of bit-error rate and data rate is calculated.The bit-error rate is directly affected by the disturbance in the link parameters,and Markov model is employed to predict the worst-case disturbance during the connection.In resource allocation phase,a heuristic reserve channel with priority fit algorithm is proposed,and experiment shows that it outperforms the traditional algorithm.