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Preamble Design for Non-contiguous Spectrum Usage in Cognitive Radio Networks

Summary: Preamble Design for Non-contiguous Spectrum
Usage in Cognitive Radio Networks
Shulan Feng1
, Heather Zheng2
, Haiguang Wang1
, Jinnan Liu1
, Philipp Zhang1
Hisilicon Technologies, Beijing, China1
; Department of Computer Sciences, University of California, Santa Barbara, USA2
{fengsl, wanghaiguang, liujinnan, pzhang}@huawei.com, htzheng@cs.ucsb.edu
Abstract-- Cognitive radios can significantly improve spectrum
efficiency by using locally available spectrum. The efficiency,
however, depends heavily on their transceiver design. In
particular, being able to use non-contiguously aligned spectrum
bands simultaneously is a critical requirement. Prior work in this
area requires a control channel so that transmitter/receiver pairs
can synchronize on their spectrum usage patterns. However, this
approach can suffer from high cost and control congestion. In
this paper, we propose an in-band solution for informing
receivers the spectrum usage patterns. By judiciously designing


Source: Almeroth, Kevin C. - Department of Computer Science, University of California at Santa Barbara


Collections: Computer Technologies and Information Sciences