A multi-carrier communication technique for interference-free spectrum sharing in cognitive radios

Future cognitive radio systems are envisioned to accommodate multiple users that are able to co-exist without causing harmful interference to each other. In this paper, we introduce a new modulation scheme, based on Single-Carrier FDMA (SC-FDMA) and Orthogonal FDMA (OFDMA), which enables interferenc...

Full description

Saved in:
Bibliographic Details
Main Author: Wylie-Green, M.P.
Format: Conference Proceeding
Language:English
Subjects:
Access protocols
Chromium
Cognitive radio
Frequency conversion
Frequency division multiaccess
Interference
OFDM modulation
Physical layer
Propagation losses
Wireless LAN
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Future cognitive radio systems are envisioned to accommodate multiple users that are able to co-exist without causing harmful interference to each other. In this paper, we introduce a new modulation scheme, based on Single-Carrier FDMA (SC-FDMA) and Orthogonal FDMA (OFDMA), which enables interference-free spectrum sharing between radios that operate over different air interfaces. The basis of our approach is that non-OFDM signals can be sampled and the resulting data samples can be used as the dasiadata symbolspsila for an SC-FDMA style transmission.The concept is demonstrated by showing that a CPM-based radio and a conventional SC-FDMA radio can transmit over the same shared channel without interfering and thus without suffering any loss in performance.
ISSN:2150-4652
2150-4660
DOI:10.1109/WDDC.2009.4800318