DocumentCode :
2975169
Title :
Intra-symbol SMSE waveform design amidst coexistent 802.11 OFDM signals
Author :
Like, E.C. ; Temple, M.A. ; Gustafson, S.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wright-Patterson AFB, Dayton, OH
fYear :
2009
fDate :
8-13 Feb. 2009
Firstpage :
67
Lastpage :
71
Abstract :
Spectrally Modulated, Spectrally Encoded (SMSE) waveform designs are optimized in a coexistent environment by independently selecting intra-symbol subcarrier power and modulation order. As demonstrated previously with Direct Sequence Spread Spectrum (DSSS) primary users (PU), SMSE waveform applicability is extended here using a coexistent environment containing multiple OFDM-based 802.11 PU signals. By exploiting statistical knowledge of PU spectral and temporal behavior, the SMSE system throughput (bits/second) can be maximized while adhering to SMSE and PU bit error rate (BER) constraints with mutual coexistent interference limited to manageable levels. Results for the SMSE-802.11 coexistent scenario demonstrate that significant performance improvement is available when the SMSE signal dynamically adapts to PU transmissions.
Keywords :
OFDM modulation; error statistics; radiofrequency interference; spread spectrum communication; 802.11 OFDM signal; bit error rate; direct sequence spread spectrum; interference; intrasymbol SMSE waveform design; intrasymbol subcarrier power; modulation order; primary user; spectral behavior; spectrally modulated spectrally encoded waveform design; statistical knowledge; temporal behavior; Bit error rate; Design optimization; Interference constraints; Knowledge management; OFDM modulation; Process design; Signal design; Signal processing; Spread spectrum communication; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Waveform Diversity and Design Conference, 2009 International
Conference_Location :
Kissimmee, FL
Print_ISBN :
978-1-4244-2970-7
Electronic_ISBN :
978-1-4244-2971-4
Type :
conf
DOI :
10.1109/WDDC.2009.4800316
Filename :
4800316
Link To Document :
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