Sciweavers

ICC
2007
IEEE
14 years 6 months ago
The Signaling Overhead in Dynamic OFDMA Systems: Reduction by Exploiting Frequency Correlation
Abstract— Dynamic OFDMA systems provide a significant performance gain compared to static OFDM approaches. In reality this gain is reduced by an overhead due to signaling. Previ...
James Gross, Pablo Alvarez, Adam Wolisz
ICC
2007
IEEE
157views Communications» more  ICC 2007»
14 years 6 months ago
Performance Evaluation of Quality of VoIP Service Over UMTS-UTRAN R99
Release99 of UMTS (Universal Mobile Telecommunication System) network supports conversational services by means of UTRAN (Universal Terrestrial Radio Access Network) Dedicated tran...
Andrea Barbaresi, Andrea Mantovani
ICC
2007
IEEE
14 years 6 months ago
A New Trellis Shaping Approach for Pulse-Shaped PSK Signals with Almost Constant Envelope
—In this paper, a novel peak power reduction scheme based on trellis shaping is proposed for single-carrier pulseshaped phase shift keying (PSK) systems. The use of PSK generally...
Makoto Tanahashi, Hideki Ochiai
ICC
2007
IEEE
171views Communications» more  ICC 2007»
14 years 6 months ago
Progressive Route Calculation Protocol for Wireless Mesh Networks
—Although network-wide flooding in reactive routing protocols like AODV [1] facilitates the discovery of optimal routes, they engender large control overhead. Some efficient floo...
Xuhui Hu, Myung J. Lee, Tarek N. Saadawi
ICC
2007
IEEE
156views Communications» more  ICC 2007»
14 years 6 months ago
CA-AQM: Channel-Aware Active Queue Management for Wireless Networks
—In a wireless network, data transmission suffers from varied signal strengths and channel bit error rates. To ensure successful packet reception under different channel conditio...
Yuan Xue, Hoang Nguyen, Klara Nahrstedt
ICC
2007
IEEE
170views Communications» more  ICC 2007»
14 years 6 months ago
A Post-Detection SNR-Aided Timing Recovery Loop for MIMO-OFDM Receivers
--- In this paper, a novel third-order Phase Lock Loop (PLL) is proposed for the timing recovery in MIMO-OFDM systems. It differentiates from conventional timing recovery algorithm...
Wenzhen Li, Masayuki Tomisawa
ICC
2007
IEEE
156views Communications» more  ICC 2007»
14 years 6 months ago
Multi-Antenna Techniques for Wireless Mesh Networks in an Outdoor Environment
— This paper investigates the behavior of a Wireless Mesh Network in which the nodes are equipped with a multiple antenna system. The objective of this study is the comparison of...
Fulvio Babich, Massimiliano Comisso, Lucio Mania
ICC
2007
IEEE
105views Communications» more  ICC 2007»
14 years 6 months ago
Intersymbol Interference Due to the Atmospheric Turbulence for Free-Space Optical Communication System
—Weak atmospheric turbulence causes pulse broadening of an optical signal. In this article, we drive the pulse broadening as a function of turbulence strength by temporal moments...
Mostofa K. Howlader, Jinho Jung
ICC
2007
IEEE
14 years 6 months ago
Adaptive Channel Reuse in Cellular Systems
Abstract— In cellular systems a large reuse distance reduces cochannel interference while a small reuse distance increases bandwidth allocated to each cell. The optimal reuse dis...
Yifan Liang, Andrea J. Goldsmith