Cramer-Rao bounds for rate-constrained distributed time-delay estimation

S. Srinivasan

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
142 Downloads (Pure)


This paper investigates time-delay estimation for acoustic source localization in a distributed microphone array. The microphones are assumed to be part of a wireless sensor network, with a constraint on the number of bits that may be exchanged between the sensors. Consequently, at the fusion center, time-delay estimation needs to be performed using quantized signals. In this paper, the relation between the communication bit-rate and the Cramer-Rao lower bound (CRLB) on the variance of the time-delay estimation error is explored. The minimum bit-rate required to ensure that the CRLB is attained is also derived.
Original languageEnglish
Title of host publicationProceedings of the 4th International Symposium on Communications, Control and Signal Processing (ISCCSP 2010), 3-5 March 2010, Limassol, Cyprus
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-4244-6285-8
Publication statusPublished - 2010


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