A method for differentially coherent multichannel processing of acoustic OFDM signals
- Resource Type
- Conference
- Authors
- Aval, Yashar M.; Stojanovic, Milica
- Source
- 2012 IEEE 7th Sensor Array and Multichannel Signal Processing Workshop (SAM) Sensor Array and Multichannel Signal Processing Workshop (SAM), 2012 IEEE 7th. :73-76 Jun, 2012
- Subject
- Signal Processing and Analysis
Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Communication, Networking and Broadcast Technologies
Computing and Processing
OFDM
Demodulation
Doppler effect
Coherence
Receivers
Arrays
Acoustics
- Language
- ISSN
- 1551-2282
2151-870X
We propose a low complexity array processing method for differential detection of OFDM signals over underwater acoustic channels. Partial FFT technique, developed previously for mitigating inter-carrier interference in single-channel receivers operating over time-varying channels, is extended to multichannel configuration. Performance results based on simulation and experimental data demonstrate the advantage of the proposed method compared to conventional differential and coherent detection.