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GLOBECOM
2006
IEEE
14 years 1 months ago
Adaptive Coding and Modulation for Hybrid ARQ Systems over Partially Observable Nakagami-m Fading Channels
— We study coding and modulation rate adaptation problem for HARQ systems with partially observable state from cross-layer viewpoint. The rate of convolutionally coded MQAM is ad...
Ashok K. Karmokar, Vijay K. Bhargava
VTC
2008
IEEE
150views Communications» more  VTC 2008»
14 years 2 months ago
Iterative Residual Frequency Offset Correction for OFDM Systems
The estimation and tracking of the fractional carrier frequency offset (CFO) is a crucial issue in the implementation of orthogonal frequency division multiplexing (OFDM) systems....
Mohamed Marey, Mamoun Guenach, Heidi Steendam
VTC
2008
IEEE
207views Communications» more  VTC 2008»
14 years 2 months ago
Practical Results of Hybrid AOA/TDOA Geo-Location Estimation in CDMA Wireless Networks
—This paper describes a hybrid AOA/TODA Mobile Station (MS) location estimation method based on the CDMA wireless communications signals. The method utilized estimates the Angle ...
Ali Broumandan, Tao Lin, John Nielsen, Géra...
ICC
2009
IEEE
14 years 2 months ago
Non-Coherent Receiver with Fractional Sampling for Impulsive UWB Systems
— We propose a low complexity noncoherent receiver operating at twice the symbol-rate for systems where each data symbol consists of multiple frames/chips. The receiver does not ...
Jian Zhang, Leif Hanlen
WIMOB
2007
IEEE
14 years 1 months ago
Performance Analysis of Ranging Process in IEEE 802.16e OFDMA Systems
In this paper, ranging process in IEEE 802.16e OFDMA systems is analyzed and performance is evaluated. Ranging process provides initial network entry, uplink synchronization, and ...
Doo Hwan Lee, Hiroyuki Morikawa