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VTC
2007
IEEE
14 years 3 months ago
Q-Learning-based Hybrid ARQ for High Speed Downlink Packet Access in UMTS
Abstract-In this paper, a Q-learning-based hybrid automatic repeat request (Q-HARQ) scheme is proposed to achieve efficient resource utilization for high speed downlink packet acc...
Chung-Ju Chang, Chia-Yuan Chang, Fang-Ching Ren
TWC
2010
13 years 3 months ago
A Novel Graph-Based Suboptimal Multiuser Detector for FDM-CPM Transmissions
We consider a frequency division multiplexed (FDM) system where each user employs a continuous phase modulation (CPM), serially concatenated with an outer code through an interleav...
Amina Piemontese, Giulio Colavolpe
COLING
2002
13 years 9 months ago
A Complete Integrated NLG System Using AI and NLU Tools
A standard architecture for an NLG system has been defined in (Reiter and Dale, 2000). Their work describes the modularization of an NLG system and the tasks of each module. Howev...
Laurence Danlos, Adil El Ghali
WCNC
2008
IEEE
14 years 3 months ago
Three-Stage Serially Concatenated Codes and Iterative Center-Shifting K-Best Sphere Detection for SDM-OFDM: An EXIT Chart Aided
—Iterative K-best sphere detection (SD) and channel decoding is appealing, since it is capable of achieving a nearmaximum-a-posteriori (MAP) performance at a low complexity. Howe...
Li Wang, Lei Xu, Sheng Chen, Lajos Hanzo
SPEECH
2002
113views more  SPEECH 2002»
13 years 8 months ago
Estimation of the signal-to-noise ratio with amplitude modulation spectrograms
An algorithm is proposed which automatically estimates the local signalto-noise ratio (SNR) between speech and noise. The feature extraction stage of the algorithm is motivated by...
Jürgen Tchorz, Birger Kollmeier