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Secret Key Sharing and Rateless Coding for Practical Secure Wireless Transmission

Authors:
Wei Liu
Chunjie Duan
Yige Wang
Toshiaki Koike-Akino
Ramesh Annavajjala
Jinyun Zhang

Keywords: Secret key generation; Wireless communications; Quantization; Rateless codes; Rate compatible codes

Abstract:
We discuss a secure wireless communication scheme, focusing on designing two major components: the key generation and the coding scheme. To achieve high key matching rate, we propose a feed-forward and feed-back quantization. The proposed scheme offers 1,dB improvement over the best known schemes. We also propose a universal quantization scheme with feed-forward/feed-back and show that its performance is the same as, or better than the other schemes which require prior distribution information. For rate-adaptive coding, we propose the use of rateless codes. Our evaluations show that the rateless code can offer significant performance gain over a low-density parity-check (LDPC) code. Moreover, we implement a soft input rateless decoder which offers additional gains. The overall security performance of our design based on these two components significantly outperforms existing designs.

Pages: 348 to 355

Copyright: Copyright (c) IARIA, 2011

Publication date: August 21, 2011

Published in: conference

ISSN: 2308-4405

ISBN: 978-1-61208-144-1

Location: Nice/Saint Laurent du Var, France

Dates: from August 21, 2011 to August 27, 2011