Title :
Baseband signal processing with UnetStack
Author :
Chitre, Mandar ; Bhatnagar, Rohit ; Ignatius, Manu ; Suman, Shailabh
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
Software-defined underwater modems implement key components of an underwater communication system in soft-ware, rather than hardware, and allow engineers and researchers to modify those components dynamically. These components include not only high-level network protocols, but also physical layer signal processing chains, modulation techniques and error-correction codes. The UnetStack project provides a flexible platform for software-defined open-architecture underwater modems and networks. We outline the software-defined modem functionality in UnetStack that enables users to process baseband acoustic signals directly. We demonstrate several practical applications of baseband signal processing, including an implementation of a software-defined OFDM modem, a delay-Doppler channel estimator, and an underwater vehicle to transponder range estimator.
Keywords :
acoustic signal processing; underwater acoustic communication; UnetStack project; baseband signal processing; delay-Doppler channel estimator; error-correction codes; modulation techniques; physical layer signal processing chains; software-defined OFDM modem; software-defined underwater modems; transponder range estimator; underwater communication system; underwater vehicle; Baseband; Modems; OFDM; Protocols; Signal processing; Software; Transponders;
Conference_Titel :
Underwater Communications and Networking (UComms), 2014
Conference_Location :
Sestri Levante
DOI :
10.1109/UComms.2014.7017156