نتایج جستجو برای: rate adaptive
تعداد نتایج: 1140318 فیلتر نتایج به سال:
this notion by saying client (i, r) has a minimally acceptable adaptivity parameter ai,r, which can be interpreted as a client’s individual QoS requirement. To emphasize this distinction between provider and client definitions of minimally acceptable stream resolutions, consider the example of a content provider offering a certain media stream with adaptivity a and maximum subscription level s....
An operator, called the dual-rate transfer function, describing a dual-rate discretized continuous-time system is presented. It can be easily related to single-rate transfer functions of the same system, and its parameters can be experimentally estimated. Based on these models, two adaptive control strategies are outlined, and some results are illustrated by a simple example. Copyright 0 1996 E...
Distributed speech recognition (DSR) is motivated by the fact that codecs used in speech transmission usually reveal a degrading voice quality below some channel quality (carrier-to-interferer ratio C/I), which justifies efficient coding of features with an appropriate channel coding in the mobile terminal. The Adaptive MultiRate (AMR) speech codec standardized for GSM and UMTS however delivers...
Abstract The effect of IQ imbalance on adaptive MQAM modulation in MIMO systems with direct conversion receivers is investigated in this paper. A continues power, discrete rate adaptive modulation scheme in using MIMO system with perfect channel information in both transmitter and receiver is considered. The selected adaptation mechanism changes the transmit power and transmit constellation s...
This document specifies a real-time transport protocol (RTP) payload format to be used for Adaptive Multi-Rate (AMR) and Adaptive MultiRate Wideband (AMR-WB) encoded speech signals. The payload format is designed to be able to interoperate with existing AMR and AMR-WB transport formats on non-IP networks. In addition, a file format is specified for transport of AMR and AMR-WB speech data in sto...
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