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Cited 14 time in webofscience Cited 13 time in scopus
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An Optimal Orthogonal Overlay for a Cyclostationary Legacy Signal SCIE SCOPUS

Title
An Optimal Orthogonal Overlay for a Cyclostationary Legacy Signal
Authors
Yun, YHCho, JH
Date Issued
2010-05
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
In this paper, the design of an overlay system is considered that operates on a channel already occupied by a legacy system. It is assumed that the legacy transmitter generates a cyclostationary signal, and that the legacy receiver is equipped with a linear filter followed by a uniform sampler. Under a zero-interference constraint at the legacy receiver, the mean-squared error at the overlay receiver is minimized to find the optimal overlay system that employs linear modulation and demodulation. For the trade-off between performance and rate of the overlay system, the problem is formulated to allow a transmission rate that is a fraction of the fundamental cycle frequency of the legacy signal. The notion of a virtual legacy receiver is devised to incorporate cases with non-identical frequency bands for the transmission and reception of the overlay signal. Using the vectorized Fourier transform technique, the problem is reformulated, the solution is derived, and a necessary and sufficient condition for the existence of the optimal solution is found, all in the frequency domain. Numerical results show that the proposed scheme significantly improves the spectral efficiency by effectively exploiting the cyclostationarity of the legacy signal.
Keywords
Cyclostationarity; joint transmitter and receiver optimization; mean-squared error (MSE); signal-to-interference-plus-noise ratio (SINR); overlay system; vectorized Fourier transform (VFT); RECEIVER OPTIMIZATION; JOINT TRANSMITTER; DESIGN; TRANSMISSION; SYSTEMS; CHANNELS
URI
https://oasis.postech.ac.kr/handle/2014.oak/25789
DOI
10.1109/TCOMM.2010.05.090001
ISSN
0090-6778
Article Type
Article
Citation
IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 58, no. 5, page. 1557 - 1567, 2010-05
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조준호CHO, JOON HO
Dept of Electrical Enginrg
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