The Analysis of Secure HARQ with Chase Combining over Block Fading Channel

In this letter, the physical layer security of hybrid automatic repeat request with chase combining（HARQ-CC） scheme is investigated from the viewpoint of information theory. Different from the literature which used Wyner code, our analysis focuses on the general scenario without specific code. We fi...

Full description

Saved in:
Bibliographic Details
Published in:中国通信 2016 (5), p.82-88
Main Author: Yue Wu Lukman A Olawoyin Nana Zhang Hongwen Yang
Format: Article
Language:Chinese
Subjects:
HARQ
中断概率
单调下降
安全分析
安全约束
混合自动重复请求
物理层安全
衰落信道
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this letter, the physical layer security of hybrid automatic repeat request with chase combining（HARQ-CC） scheme is investigated from the viewpoint of information theory. Different from the literature which used Wyner code, our analysis focuses on the general scenario without specific code. We firstly obtain the outage probability of both main channel and wiretap channel. Since retransmissions are completely determined by main channel, we then prove that its achievable diversity order equals to maximum transmission number（） while this order of wiretap channel is only one. Furthermore, we evaluate the metric of secure gap which demonstrates the difference between main channel and wiretap channel with reliable and secure constraints. As increases, the secure gap decreases monotonously. When is large enough, the security can be guaranteed even if wiretap channel is better than main channel.
ISSN:1673-5447