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Displaying records 31 to 39.
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31. Quantize-and-Forward Relaying with M-ary Phase Shift Keying
Topic: Wireless
Published: 3/31/2008
Authors: Michael R Souryal, Huiqing You
Abstract: Using cooperative transmission, two or more single-antenna users can share their antennas to achieve spatial diversity in a slow fading channel. One relaying protocol that achieves diversity, amplify-and-forward (AF), is striking in its simplicity, b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51311

32. Performance of Amplify-and-Forward and Decode-and-Forward Relaying in Rayleigh Fading With Turbo Codes
Topic: Wireless
Published: 5/1/2006
Authors: Michael R Souryal, B R Vojcic
Abstract: Cooperative transmission, in which a source and relay cooperate to send a message to a destination, can provide spatial diversity against fading in wireless networks. We derive analytical expressions for the error probability of amplify-and-forward ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151153

33. Adaptive Modulation In Ad Hoc DS/CDMA Packet Radio Networks
Topic: Wireless
Published: 4/1/2006
Authors: Michael R Souryal, B R Vojcic, R L Pickholtz
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51334

34. Link Assessment in an Indoor 802.11 Network
Topic: Wireless
Published: 4/1/2006
Authors: Michael R Souryal, Luke Klein-Berndt, Leonard E. Miller, Nader Moayeri
Abstract: This paper presents the empirical results and analysis of a link variability study for an indoor, stationary 802.11 network subject to external interference. The objective is to characterize the relationships between the packet loss rate on a link an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150597

35. Joint Rate Adaptation and Channel-Adaptive Relaying in 802.11 Ad Hoc Networks
Topic: Wireless
Published: 1/1/2006
Authors: Michael R Souryal, Nader Moayeri
Abstract: Channel-adaptive relaying has recently been proposed as a means to exploit spatial and temporal diversity in multihop ad hoc networks with fading. In conjunction with appropriate routing protocols, adaptive relaying enables each forwarding node in a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50852

36. Soft Decision Metrics for Turbo-Coded FH M-FSK Ad Hoc Packet Radio Networks
Topic: Wireless
Published: 10/1/2005
Authors: B M Peric, Michael R Souryal, E G Larsson, B R Vojcic
Abstract: This paper addresses turbo-coded non-coherent FH M-FSK ad hoc networks with a Poisson distribution of interferers where multiple access interference can be modeled as symmetric a-stable (SaS) noise and a is inversely proportional to the path loss ex ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150118

37. Soft-Decision Metrics for Coded Orthogonal Signaling in Symmetric Alpha-Stable Noise
Topic: Wireless
Published: 3/1/2005
Authors: Michael R Souryal, E G Larsson, B M Peric, B R Vojcic
Abstract: This paper derives new soft decision metrics for coded orthogonal signaling in symmetric a-stable noise, which has been used to model impulsive noise. In addition to the optimum metrics for Gaussian (a = 2) noise and Cauchy (a = 1) noise, a class of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50117

38. Information Efficiency of Multihop Packet Radio Networks and Channel-Adaptive Routing
Topic: Wireless
Published: 1/1/2005
Authors: Michael R Souryal, B R Vojcic, R L Pickholtz
Abstract: We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all ha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150126

39. Wireless Security: 802.11, Bluetooth and Handheld Devices
Series: Special Publication (NIST SP)
Report Number: 800-48
Topic: Wireless
Published: 11/1/2002
Authors: Athanasios T Karygiannis, L Owens
Abstract: [Superseded by SP 800-48 Rev. 1 (July 2008): http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890006] The purpose of this document is to provide agencies with guidance for establishing secure wireless networks. Agencies are encouraged to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50740



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