Sidelobe Suppression for Non-systematic Coded UW-OFDM in Cognitive Radio Networks
Author:
, , , ,Year
: 2014
Abstract: In this paper, a novel non-contiguous non-systematic
coded unique word (UW)-OFDM system is proposed to opportunistically
transmit data on the spectrum holes available in a
cognitive radio network. In such a system, the spectral sidelobes
of the active subcarriers interfere with the adjacent spectral band
used by the primary system. In the proposed scheme, the code
generator matrix of the UW-OFDM is designed to suppress the
sidelobes. So, there is no need to add any extra processing to the
transmitter for suppressing sidelobes. The derived code generator
matrix is optimum in the sense of being matched to the best linear
unbiased estimator and to the linear minimum mean square error
data estimators. The achieved sidelobe suppression is a function
of the number of transmitted data symbols. Simulation results
show that by a slight decrease in the number of transmitted data
symbols, the sidelobes power can be suppressed to zero.
coded unique word (UW)-OFDM system is proposed to opportunistically
transmit data on the spectrum holes available in a
cognitive radio network. In such a system, the spectral sidelobes
of the active subcarriers interfere with the adjacent spectral band
used by the primary system. In the proposed scheme, the code
generator matrix of the UW-OFDM is designed to suppress the
sidelobes. So, there is no need to add any extra processing to the
transmitter for suppressing sidelobes. The derived code generator
matrix is optimum in the sense of being matched to the best linear
unbiased estimator and to the linear minimum mean square error
data estimators. The achieved sidelobe suppression is a function
of the number of transmitted data symbols. Simulation results
show that by a slight decrease in the number of transmitted data
symbols, the sidelobes power can be suppressed to zero.
Keyword(s): unique word OFDM,sidelobe suppression,cognitive
radios,code generator matrix
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Sidelobe Suppression for Non-systematic Coded UW-OFDM in Cognitive Radio Networks
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| contributor author | مرتضی رجب زاده اوغاز | en |
| contributor author | حسین خوش بین قماش | en |
| contributor author | Heidi Steendam | en |
| contributor author | Morteza Rajabzadeh | fa |
| contributor author | Hossein Khoshbin Ghomash | fa |
| date accessioned | 2020-06-06T14:15:03Z | |
| date available | 2020-06-06T14:15:03Z | |
| date copyright | 5/14/2014 | |
| date issued | 2014 | |
| identifier uri | http://libsearch.um.ac.ir:80/fum/handle/fum/3388737?locale-attribute=en | |
| description abstract | In this paper, a novel non-contiguous non-systematic coded unique word (UW)-OFDM system is proposed to opportunistically transmit data on the spectrum holes available in a cognitive radio network. In such a system, the spectral sidelobes of the active subcarriers interfere with the adjacent spectral band used by the primary system. In the proposed scheme, the code generator matrix of the UW-OFDM is designed to suppress the sidelobes. So, there is no need to add any extra processing to the transmitter for suppressing sidelobes. The derived code generator matrix is optimum in the sense of being matched to the best linear unbiased estimator and to the linear minimum mean square error data estimators. The achieved sidelobe suppression is a function of the number of transmitted data symbols. Simulation results show that by a slight decrease in the number of transmitted data symbols, the sidelobes power can be suppressed to zero. | en |
| language | English | |
| title | Sidelobe Suppression for Non-systematic Coded UW-OFDM in Cognitive Radio Networks | en |
| type | Conference Paper | |
| contenttype | External Fulltext | |
| subject keywords | unique word OFDM | en |
| subject keywords | sidelobe suppression | en |
| subject keywords | cognitive radios | en |
| subject keywords | code generator matrix | en |
| identifier link | https://profdoc.um.ac.ir/paper-abstract-1042711.html | |
| conference title | European Wireless 2014; 20th European Wireless Conference | en |
| conference location | Barcelona | fa |
| identifier articleid | 1042711 |