PULSE-CODE MODULATION (PCM) In PCM, several pulses are used as a code group to describe the quantized amplitude of a single sample. For example, a code group of n on-off pulses (binary code) can represent 2n discrete amplitudes or levels, including zero level. In general, in an s-ary...
Device for receiving Numerical recognition of multifrequency signals with Pulse Code Modulation.Filtration is a number that is independently of other input sequence of n successive Numerical samples taken in the same way the multifrequency signals and provides the recognition device, in response to a ...
A definition of the term "Differential Pulse-Code Modulation (DPCM)" is presented. It refers to a PCM technique that codes the difference between sample points to compress the digital data. The differences are smaller numbers that the numerical value of each sample on the full scale and thereby...
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The design of an experimental single-channel 224-Mbit/s (megabits per second) optical pulse code modulation terminal is described and data are presented wh... RT Denton,TS Kinsel - 《Proceedings of the IEEE》 被引量: 63发表: 1968年 Laser pulse code communication only given substantially as ...
Approximately 0.5/N (in the best of cases) Sidelobes are not low, especially with a doppler shift. Barker code A form of binary phase code that has all its time sidelobes equal to 1/N2 that of the compressed pulse peak power. N 1/N2 Limited to N≤ 13. Longer pulse compression ratio...
(fig. 2 e2). therefore, the purity of both the mode and polarizations should be further improved to produce the ideal, extremely refined output pulses. measurements for other states, including south pole, azimuthal, \((\pi /2,\pi /4)\) , \((0,-\pi /4),\) \((\pi /2, 0)\)...
A new ultra-wide band (UWB) modulation scheme called L-ary ultra-wide band time hopping multi-pulse position modulation (UWB-TH-MPPM) is proposed for high data-rate wireless application, which can provide better communication performance. The constant weight code is introduced to construct the MP...
The circuit of FIG. 6 illustrates an embodiment which implements simply and completely the numerical transformations indicated in FIG. 5. The A-law PCM code word S ABC WXYZ enters at the top of the circuit of FIG. 6 on the leads designated with the names of the corresponding bits. Through...
Numerical evaluation on sub-Nyquist spectrum reconstruction methods 1 Introduction As wireless technology continues to expand,there is a growing concern about the efficient use of spectrum resources.Even though a significan... Z Song,H Zhang,S Fuller,... - 《Frontiers of Computer Science》 被引量...