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Intelligibility and Space-based Voice with Relaxed Delay ConstraintsThe inherent aspects and flaws surrounding space based communication is technically described and the math surrounding encoding and decoding LT Codes is examined. Utilizing LT codes as a means of reducing packet erasures due to corrupted packets on an RF link can result in higher voice quality. PESQ-MOS measure was used to analyze voice degradation over space links tested for LT codec size and number of 10ms per packet.Extensions utilizing LT codes to improve the packet erasure performance and combining the use of ASR could provide for a solid means of identifying the benefit in terms of intelligibility of voice communications in space-based networks
Document ID
20090036790
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Nguyen, Sam
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Okino, Clayton
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cheng, Michael
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
March 5, 2008
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Meeting Information
Meeting: IEEE Aerospace Conference
Location: Big Sky, MT
Country: United States
Start Date: March 5, 2008
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
space communications
Luby-Transform (LT) Codes

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