Paper Info
Title
Mask Compliant Precoder for OFDM Spectrum Shaping
Abstract
In this letter, a precoder for shaping the spectrum of orthogonal frequency division multiplexing (OFDM) is presented. Unlike existing methods that focus on minimizing or forcing the sidelobes to zero, the proposed precoder is designed with the goal of controlling the out-of-band emissions beneath a particular power level without impacting the bit error rate (BER) performance. A small distortion is added to the information symbols forcing the emitted spectrum under a prescribed radio frequency mask. Obtained results show that the BER performance of the proposed precoder is similar to that of uncoded OFDM under relaxed masks. Moreover, the effect of the proposed precoder on edge subcarriers is investigated. Error vector magnitude (EVM) per subcarrier shows the designed precoder introduces more distortion on edge subcarriers. Consequently, the proposed precoder when combined with adaptive modulation provides further improvement in BER performance under strict masks.
Year
DOI
Venue
2013
10.1109/LCOMM.2013.020513.122495
Communications Letters, IEEE
Keywords
Field
DocType
OFDM modulation,adaptive modulation,cognitive radio,error statistics,precoding,BER performance,EVM,OFDM spectrum shaping,adaptive modulation,bit error rate performance,edge subcarriers,error vector magnitude,information symbols,mask compliant precoder,orthogonal frequency division multiplexing,out-of-band emissions,radiofrequency mask,relaxed masks,uncoded OFDM,Adaptive modulation,OFDM,out-of-band radiation,precoder,sidelobe suppression,spectrum shaping
Subcarrier,Link adaptation,Computer science,Control theory,Radio frequency,Real-time computing,Electronic engineering,Distortion,Orthogonal frequency-division multiplexing,Precoding,Cognitive radio,Bit error rate
Journal
Volume
Issue
ISSN
17
3
1089-7798
Citations 
PageRank 
References 
15
0.82
3
Authors
3
Name
Order
Citations
PageRank
Anas Tom1150.82
Alphan Sahin2252.13
Hüseyin Arslan333233.33