协议序列主要用于为 Massey 提出的无反馈冲突信道提供信道接入机制，它通过不同序列 值指定各用户的发送时刻，并借助良好的汉明互相关特性保障网络性能。基于中国余数定理构 造的 CRT 序列作为协议序列的一个重要子集，其吞吐率以及延迟性能仅在单信道网络中被广泛 研究。本论文以多信道跳频通信网络为研究背景，探讨 CRT 序列如何应用于跳频网络，并对其 吞吐率及延迟性能作了仿真分析。仿真结果表明，CRT 序列的平均吞吐率性能与随机接入机制 一致，但在最差吞吐量、平均时延以及最差时延方面具有性能优势。75932

关键词：多信道 协议序列 CRT 序列 吞吐量 时延

Title 多信道跳频网络的协议序列性能分析研究

Abstract:

Protocol sequences are used in the channel access for the collision channel without feedback proposed by Massey。 In a protocol-sequence-based scheme, each user determines when to transmit by sequentially reading out the entries from the assigned protocol sequence, and thus enjoys some performance guarantee benifiting from the property of Hamming cross-correlations。 As an important class of protocol sequences, CRT sequences are constructed based on the Chinese Reminder Theorem, and their throughput, delay performance has been extensively investigated in single-channel networks。 This thesis focuses on multi-channel frequency hopping communication networks, and analyzes how to modify CRT sequences to support multi-channel networks。 Simulation results show that the CRT sequences outperform the Aloha scheme in terms of the worst-case throughut, average delay and the worst-case delay, but enjoy the same average throughput performance。

Keywords: multi-channel  protocol sequence  CRT sequence   throughput  delay

目 次

1 引言 1

1。1 无线多信道跳频网络 1

1。2 协议序列 5

1。3 国内外研究现状 7

1。4 论文结构与主要工作 10

2 多信道跳频网络 11

2。1 跳频通信原理 11

2。2 信道模型 14

2。3 多信道随机接入协议 17

3 CRT 协议序列 20

3。1 序列参数 20

3。2 工作原理 22

3。3 构造方法 22

3。4 主要性质 25

3。5 多信道跳频网络下性能实例分析 25

3。6 本章小结 28

4 基于多信道跳频网络的 CRT 序列仿真分析 30

4。1