TY - GEN
T1 - PAPR and out-of-band power reduction in OFDM-based cognitive radios
AU - Lasya, P. Raghava
AU - Kumar, M. Sathish
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/3/10
Y1 - 2015/3/10
N2 - One of the interesting features of cognitive radio (CR) systems is their ability to provide dynamic spectrum access even in the licensed spectral bands; wherein they should be strictly causing no interference to the licensed users or among themselves. Orthogonal frequency-division multiplexing (OFDM) is considered for CR user transmission because of its flexible operation in frequency band switching; but suffers from high peak-to-average power ratio (PAPR). Hence, a transmission method where it can cause minimum interference with lower PAPR is obtained. In this paper, a better method to reduce out-of-band (OOB) power as well as PAPR is modeled by combining spectral precoding which aims at OOB radiation suppression; and PAPR reduction techniques such as selected mapping (SLM) technique and iterative clipping and filtering (ICF). The performance of these methods are discussed in terms of power spectral densities (PSD) and complementary cumulative distribution function (CCDF) of PAPR.
AB - One of the interesting features of cognitive radio (CR) systems is their ability to provide dynamic spectrum access even in the licensed spectral bands; wherein they should be strictly causing no interference to the licensed users or among themselves. Orthogonal frequency-division multiplexing (OFDM) is considered for CR user transmission because of its flexible operation in frequency band switching; but suffers from high peak-to-average power ratio (PAPR). Hence, a transmission method where it can cause minimum interference with lower PAPR is obtained. In this paper, a better method to reduce out-of-band (OOB) power as well as PAPR is modeled by combining spectral precoding which aims at OOB radiation suppression; and PAPR reduction techniques such as selected mapping (SLM) technique and iterative clipping and filtering (ICF). The performance of these methods are discussed in terms of power spectral densities (PSD) and complementary cumulative distribution function (CCDF) of PAPR.
UR - https://www.scopus.com/pages/publications/84929095587
UR - https://www.scopus.com/pages/publications/84929095587#tab=citedBy
U2 - 10.1109/SPACES.2015.7058309
DO - 10.1109/SPACES.2015.7058309
M3 - Conference contribution
AN - SCOPUS:84929095587
T3 - International Conference on Signal Processing and Communication Engineering Systems - Proceedings of SPACES 2015, in Association with IEEE
SP - 473
EP - 476
BT - International Conference on Signal Processing and Communication Engineering Systems - Proceedings of SPACES 2015, in Association with IEEE
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Conference on Signal Processing and Communication Engineering Systems, SPACES 2015 - In Association with IEEE
Y2 - 2 January 2015 through 3 January 2015
ER -