Title :
Multi-terminal source coding through a relay
Author :
Soundararajan, Rajiv ; Vishwanath, Sriram
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA
fDate :
July 31 2011-Aug. 5 2011
Abstract :
This paper studies a multi -terminal source coding problem, where two terminals possess two (correlated) Gaussian sources to be compressed and delivered to the destination through an intermediate relay. Unlike the CEO and conventional two terminal source coding problems as well as point-to-point relay source coding problem, lattices are found to play an important role in achieving "good" rates for this problem setting. Two achievable strategies compute-and-forward and compress-and forward are used to develop achievable rates for this problem setting. For the symmetric case, the inner and outer bounds developed are shown to be within 1/2 bits of each other.
Keywords :
Gaussian processes; correlation methods; source coding; compress and forward; compute and forward; correlated Gaussian sources; intermediate relay; multi terminal source coding; point to point relay source coding; Decoding; Lattices; Rate-distortion; Relays; Source coding; Zinc;
Conference_Titel :
Information Theory Proceedings (ISIT), 2011 IEEE International Symposium on
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4577-0596-0
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2011.6033874