Results 211 to 220 of about 33,716 (264)
Some of the next articles are maybe not open access.
Hybrid D-PCM, A Combination of PCM and DPCM
IEEE Transactions on Communications, 1978After a short review of the basic principles of PCM and DPCM coding it is shown that combining the two methods in one coding system results in a combination of some favorable properties. The hybrid D-PCM system combines the bit-rate reduction of DPCM with a low error sensitivity.
openaire +1 more source
A PCM/ADM and ADM/PCM code converter
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1979In this paper a bidirectional code converter system that converts PCM to ADM and ADM to PCM directly in the digital domain is studied. The particular coding schemes chosen for study are the μ-255 PCM with the rate of 64 kbits/s and the continuously variable slope delta modulation (CVSD) with 32 kbits/s.
null Hong Jeong, null Chong Un
openaire +1 more source
IEEE Transactions on Communications, 1979
Matched differential PCM systems are analyzed for stationary first order Gauss Markov process inputs. The computational procedure yields convergent solutions for the variance and the probability density function of the point-wise error for all sampling intervals.
openaire +1 more source
Matched differential PCM systems are analyzed for stationary first order Gauss Markov process inputs. The computational procedure yields convergent solutions for the variance and the probability density function of the point-wise error for all sampling intervals.
openaire +1 more source
HL-PCM: MLC PCM Main Memory with Accelerated Read
IEEE Transactions on Parallel and Distributed Systems, 2017Multi-Level Cell Phase Change Memory (MLC PCM) is a promising candidate technology for DRAM replacement in main memory of modern computers. Despite of its high density and low power advantages, this technology seriously suffers from slow read and write operations.
Mohammad Arjomand +4 more
openaire +1 more source
A new formulation of the PCM solvation method: PCM-QINTn
Theoretical Chemistry Accounts: Theory, Computation, and Modeling (Theoretica Chimica Acta), 1997A new formulation of the PCM electrostatic solution problem is proposed. Through a new derivation of the PCM-CLSn expression we propose an interpolation formula that improved the convergence: PCM-QINTn. All the available formulations are applied to the evaluation of the electrostatic component of the free energy of solvation for some molecular systems.
Christian Silvio Pomelli, Jacopo Tomasi
openaire +1 more source
Status and challenges of PCM modeling
ESSDERC 2007 - 37th European Solid State Device Research Conference, 2007From the stage of concept-level alternative to Flash memories, the phase-change memory (PCM) is rapidly gaining the status of reference technology for high performance, high endurance next generation non volatile applications. To sustain the development of new and scaled PCM technologies, a comprehensive understanding and modelling of the cell at the ...
LACAITA, ANDREA LEONARDO +1 more
openaire +3 more sources
An Integrated Interpolative PCM Decoder
IEEE Transactions on Communications, 1979Discusses the technique of time averaging interpolation which provides a means for obtaining telephone quality digital-to-analog conversion using conventional digital integrated-circuit processing. Describes a monolithic circuit that decodes the 8-kHz companded PCM commonly used in voiceband communication systems.
Bruce A. Wooley +3 more
openaire +1 more source
1985
Im diesem Teil wird beschrieben, was ein PCM System ist, wie es eingesetzt werden kann und wie die moglichen Anwendungen aussehen konnten.
Monika Reiter, Manfred Wilfing
openaire +1 more source
Im diesem Teil wird beschrieben, was ein PCM System ist, wie es eingesetzt werden kann und wie die moglichen Anwendungen aussehen konnten.
Monika Reiter, Manfred Wilfing
openaire +1 more source
PCM and PCM Slurries and Their Application in Solar Systems
2019PCM/MPCM and their slurries, acting as thermal storage, heat transfer enhancement, and temperature constancy medium, have drawn extensive concerns. Their basic concepts, classification, physical and chemical properties, MPCM fabrications, and applications in solar systems were presented in this chapter.
Zhongzhu Qiu +4 more
openaire +1 more source
Proceedings of the IRE, 1948
Recent papers describe experiments in transmitting speech by PCM (pulse code modulation). This paper shows in a general way some of the advantages of PCM, and distinguishes between what can be achieved with PCM and with other broadband systems, such as large-index FM.
B.M. Oliver, J.R. Pierce, C.E. Shannon
openaire +1 more source
Recent papers describe experiments in transmitting speech by PCM (pulse code modulation). This paper shows in a general way some of the advantages of PCM, and distinguishes between what can be achieved with PCM and with other broadband systems, such as large-index FM.
B.M. Oliver, J.R. Pierce, C.E. Shannon
openaire +1 more source