Title :
OFDM-constrained channel capacity estimates of the SIMO shallow underwater communication channel
Author :
Zhu, Y. ; Fischer, T.R. ; Belzer, B.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA
Abstract :
Single-input, multiple-output (SIMO) shallow underwater acoustic channel response measurements are used to develop baseband equivalent, discrete-time, intersymbol interference (ISI) SIMO channel impulse response models. Zero-padded orthogonal frequency division multiplexing (OFDM) is used with the database of ISI channel models to estimate the OFDM-constrained ergodic channel capacity, and the outage capacity. A simplified expression for the SIMO ergodic channel capacity is derived. The channel capacity is compared to estimates of bit error rate for differential binary phase shift keying (DBPSK) used in the OFDM SIMO system. Spread-response precoding is shown to significantly improve the OFDM/DBPSK performance.
Keywords :
OFDM modulation; channel capacity; channel estimation; differential phase shift keying; interference suppression; intersymbol interference; precoding; transient response; underwater acoustic communication; DBPSK; OFDM; SIMO channel impulse response model; SIMO shallow underwater communication channel; baseband equivalent model; differential binary phase shift keying; discrete time model; ergodic channel capacity estimation; intersymbol interference; orthogonal frequency division multiplexing; precoding; shallow underwater acoustic channel response measurement; single input multiple output; zero padding; Channel capacity; Fading; OFDM; Receivers; Signal to noise ratio; Transmitters; Vectors; Ergodic Channel Capacity; OFDM; Outage Capacity; Underwater Acoustic Communications;
Conference_Titel :
Information Sciences and Systems (CISS), 2012 46th Annual Conference on
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4673-3139-5
Electronic_ISBN :
978-1-4673-3138-8
DOI :
10.1109/CISS.2012.6310819
