Results 211 to 220 of about 169,751 (246)
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1985
The term pulse code modulation (PCM) refers to the use of a specific set of rules for transforming a waveform into a stream of digits, and vice versa. To clarify the concept, however, the first point to be made is that PCM is coding, but it is not necessarily the modulation of the carrier.
Bernhard E. Keiser, Eugene Strange
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The term pulse code modulation (PCM) refers to the use of a specific set of rules for transforming a waveform into a stream of digits, and vice versa. To clarify the concept, however, the first point to be made is that PCM is coding, but it is not necessarily the modulation of the carrier.
Bernhard E. Keiser, Eugene Strange
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Proceedings of GLOBECOM '93. IEEE Global Telecommunications Conference, 1997
Summary: This letter presents a technique of combining multilevel coded modulation and product coding to form product modulation codes which achieve low bit error rates with reduced decoding complexity. Three multistage decoding algorithms are presented, and good codes for both the additive white Gaussian noise (AWGN) and Rayleigh fading channels have ...
Rajpal, Sandeep, Lin, Shu
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Summary: This letter presents a technique of combining multilevel coded modulation and product coding to form product modulation codes which achieve low bit error rates with reduced decoding complexity. Three multistage decoding algorithms are presented, and good codes for both the additive white Gaussian noise (AWGN) and Rayleigh fading channels have ...
Rajpal, Sandeep, Lin, Shu
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Transactions of the American Institute of Electrical Engineers, 1947
A radically new modulation technique for multichannel telephony has been developed which involves the conversion of speech waves into coded pulses. An 8-channel system employing pulse code modulation (PCM) and embodying these principles was produced. The method appears to have exceptional possibilities from the standpoint of freedom from interference ...
H. S. Black, J. O. Edson
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A radically new modulation technique for multichannel telephony has been developed which involves the conversion of speech waves into coded pulses. An 8-channel system employing pulse code modulation (PCM) and embodying these principles was produced. The method appears to have exceptional possibilities from the standpoint of freedom from interference ...
H. S. Black, J. O. Edson
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2009 3rd International Conference on Signal Processing and Communication Systems, 2009
In this paper a new digital passband modulation hierarchy has been proposed. It has the advantage of combining line coding and digital passband modulation in one entity, hence reducing the number of stages of the transmitter and the receiver. The new LCM enhances the transmitted signal with some desirable features such as favorable power spectral ...
Bahman R. Alyaei, Abdullatif Glass
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In this paper a new digital passband modulation hierarchy has been proposed. It has the advantage of combining line coding and digital passband modulation in one entity, hence reducing the number of stages of the transmitter and the receiver. The new LCM enhances the transmitted signal with some desirable features such as favorable power spectral ...
Bahman R. Alyaei, Abdullatif Glass
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1999
As it is discussed in Chapter 1, power and bandwidth are limited resources in modern communication systems, and the efficient exploitation of these resources invariably involves an increase in complexity. It has become apparent over the past few decades that when there are strict limits on the power and bandwidth resources, the complexity of ...
Irving S. Reed, Xuemin Chen
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As it is discussed in Chapter 1, power and bandwidth are limited resources in modern communication systems, and the efficient exploitation of these resources invariably involves an increase in complexity. It has become apparent over the past few decades that when there are strict limits on the power and bandwidth resources, the complexity of ...
Irving S. Reed, Xuemin Chen
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2011
This chapter contains sections titled: Motivation A Historical Perspective on Coded Modulation Trellis-Coded Modulation The Symbol-based MAP Algorithm Turbo Trellis-Coded Modulation Bit-Interleaved Coded Modulation Bit-Interleaved Coded Modulation with Iterative Decoding ...
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This chapter contains sections titled: Motivation A Historical Perspective on Coded Modulation Trellis-Coded Modulation The Symbol-based MAP Algorithm Turbo Trellis-Coded Modulation Bit-Interleaved Coded Modulation Bit-Interleaved Coded Modulation with Iterative Decoding ...
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1994
In this thesis, we are concerned with the transmission of data over noncoherent channels (the carrier phase is random). We consider a receiving system which does not attempt to estimate the carrier phase from the received data. Instead, the transmitter and receiver will be designed so that the data transmission is robust with respect to the unknown ...
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In this thesis, we are concerned with the transmission of data over noncoherent channels (the carrier phase is random). We consider a receiving system which does not attempt to estimate the carrier phase from the received data. Instead, the transmitter and receiver will be designed so that the data transmission is robust with respect to the unknown ...
openaire +1 more source