frequency
RSS frequencyMulti-User Frequency Domain Scheduling for WiMAX OFDMA
White Paper This paper introduces the performance analysis of 802.16e OFDMA system in UL mode with respect to multi-user scheduling algorithms in frequency domain. It is shown that multi-user scheduling in frequency... [23 Apr 2009]
MMSN: Multi-Frequency Media Access Control for Wireless Sensor Networks
White Paper Multi-frequency media access control has been well understood in general wireless ad hoc networks, while in wireless sensor networks, researchers still focus on single frequency solutions. Hence, the... [25 Aug 2007]
Performance Analysis of Multiantenna WiMAX Systems Over Frequency-Selective Fading Channels
White Paper A multicell WiMax system which supports Orthogonal Frequency Division Multiplexing (OFDM) and antenna arrays at the base stations is considered in this paper as conforming to the IEEE 802.16-2004 standard. [22 Apr 2009]
Feasibility of Adaptive Transmission for Multicarrier and Frequency Hopping Mobile Radio Systems
White Paper The paper describes the design and performance of adaptive transmission methods enabled by the Long Range Fading Prediction algorithms (LRP) for Orthogonal Frequency Division Multiplexing (OFDM) and slow... [31 Aug 2007]
ABCs of RFID: Understanding and Using Radio Frequency Identification
White Paper Radio Frequency IDentification (RFID) is one of the fastest growing and most beneficial technologies being adopted by businesses today. Adoption of this Automatic Data-Collection (ADC) technology has recently been fueled... [01 May 2008]
Modified SMI Techniques for Frequency Selective Channels in OFDM
White Paper In this paper, windowing techniques are applied in order to calculate a beamformer per subcarrier for Orthogonal Frequency Division Multiplexing (OFDM) systems with very limited known training. The Sample Matrix... [14 Apr 2007]
Unlicensed Operation of IEEE 802.16: Coexistence With 802.11(a) in Shared Frequency Bands
White Paper In license-exempt frequency bands, the frame-based medium access of 802.16 requires rigorous protection against interference from wireless local area networks in order to operate properly when sharing spectrum. [22 Apr 2009]
Optimal Training Signals for MIMO OFDM Channel Estimation in the Presence of Frequency Offset and Phase Noise
White Paper The authors develop robust Mean-Square Error (MSE)-optimal training signal designs for multiple-input multiple-output orthogonal frequency-division multiplexing channel estimation with frequency offset... [13 Apr 2007]
Coherent Optical Frequency Transfer Via 110-Km Urban Fiber Network
White Paper Optical frequency at 1542 nm was coherently transferred over a 110-km optical fiber using an urban fiber network (JGN2) between Tsukuba and Kashiwa cities. The phase fluctuation induced by the fiber length fluctuation... [11 Sep 2008]
Radio Frequency Identification: A Business Revolution Providing Strategic and Competitive Advantage
White Paper Radio Frequency Identification (RFID) is a wireless data collection technology developed during World War II that has been used in tracking and accessing applications for about a decade. The technology transfers data... [04 Aug 2008]
Ofcom auction: High-frequency spectrum to highest bidders
News Telecoms regulator Ofcom is to auction four bands of high-frequency spectrum which could be used for wireless broadband services. Wireless from A to Z Click on the links below to find out more… A is for Antivirus [05 Dec 2007]
BER Performance of OFDM System in Frequency-Selective Rician Fading With Diversity Reception
White Paper This paper theoretically studies the Bit Error Rate (BER) performance of OFDM systems with MDPSK modulation for subchannels in frequency-selective flat Rician fading and Additive White Gaussian Noise (AWGN). [18 Apr 2007]
Virgin Atlantic Airways Pilots Radio Frequency Identification With Oracle and Tata Consultancy Services
White Paper TCS) customer, agreed to conduct a Radio Frequency IDentification (RFID) pilot to RFID tag critical parts used in aircraft maintenance and repairs at its Heathrow Airport warehouse in the UK. Since it was founded in... [06 Oct 2006]
Selection Criteria for Implementing Optimum WIMAX Frequency Spectrum
White Paper This paper is about a work that was carried out by the authors in an attempt to identify technologically robust and economically viable solution for commercial implementation and installation of WIMAX optimal frequency... [15 Apr 2009]
Understanding Radio Frequency Identification (RFID) and Its Impact on the Supply Chain
White Paper Department of Defense, Radio-Frequency IDentification (RFID) is gaining significant momentum as a technology solution in the supply chain. Fueled by initiatives from Wal-Mart and the U.S. Despite the considerable promise... [03 Sep 2007]
