Title :
Partial response signaling for enhanced spectral efficiency and RF performance in OFDM systems
Author :
Vadde, Venkatesh ; Gray, Steven
Author_Institution :
Nokia Res. Center, Irving, TX, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
An OFDM system traditionally modulates each orthogonal subcarrier with a single data sample. We introduce a new method of partial response (PR) signaling where each data sample is spread over multiple subcarriers. The deliberately introduced dispersion in frequency can help compress the signal in time leading to significant time and/or bandwidth gains. We evaluate the performance of a PR signaled OFDM system in Rayleigh fading channels. We show that PR-OFDM can give spectral efficiency gains of up to 40% and mitigate peak-to-average power ratio by up to 5 dB
Keywords :
OFDM modulation; Rayleigh channels; bandwidth compression; partial response channels; telecommunication signalling; PR-OFDM; RF performance; Rayleigh fading channels; bandwidth gains; data sample spreading; frequency dispersion; multicarrier modulation; multiple subcarriers; orthogonal frequency division multiplexing; orthogonal subcarrier; partial response signaling; peak-to-average power ratio; signal compression; spectral efficiency; Bandwidth; Compaction; Convolution; Frequency domain analysis; Intersymbol interference; OFDM modulation; Partial response signaling; Peak to average power ratio; Radio frequency; Time domain analysis;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966001
