Journal ArticleDOI
A method of coding for correlative transmission systems and its application to a continuous phase modulation system
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TLDR
An encoding scheme using block code to improve the performance of certain correlative transmission systems whose transmitters' states can be represented by a simple shift register is proposed and shown to outperforms the MSK scheme in both the power spectral distribution and the error rate.Abstract:
To transmit data reliably over band-limited channels, several correlation digital transmission techniques such as continuous phase FSK, and partial response signaling have been developed. The reliability of correlative transmission systems can further be enhanced by utilizing the error correcting codes. However, it is very important to select a coding scheme that is suitable for a given transmission system. This paper proposes an encoding scheme using block code to improve the performance of certain correlative transmission systems whose transmitters' states can be represented by a simple shift register. The Viterbi algorithm is used in the decoding. The detection of symbols and the soft decision for the decoding of the proposed scheme are combined into a single process. The performance of the proposed method is demonstrated through its application to a duobinary FSK system with modulation index h = 0.5. The results indicate that the proposed scheme outperforms the MSK scheme in both the power spectral distribution and the error rate.read more
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References
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Journal ArticleDOI
The viterbi algorithm
TL;DR: This paper gives a tutorial exposition of the Viterbi algorithm and of how it is implemented and analyzed, and increasing use of the algorithm in a widening variety of areas is foreseen.
Journal ArticleDOI
Efficient maximum likelihood decoding of linear block codes using a trellis
TL;DR: It is shown that soft decision maximum likelihood decoding of any (n,k) linear block code over GF(q) can be accomplished using the Viterbi algorithm applied to a trellis with no more than q^{(n-k)} states.
Journal ArticleDOI
Partial-Response Signaling
Peter Kabal,Subbarayan Pasupathy +1 more
TL;DR: A PRS system model is introduced which enables the investigation of PRS schemes from the viewpoint of spectral properties such as bandwidth, nulls, and continuity of derivatives and it is shown that eye width, a performance measure that has not been used previously in comparing PRS systems, can be calculated analytically in many cases.
Journal ArticleDOI
Coherent and Noncoherent Detection CPFSK
W. Osborne,M. Luntz +1 more
TL;DR: This work provides a complete analysis of the performance of CPFSK at high SNR as well as low SNR and thereby unifies and extends the results previously available.
Journal ArticleDOI
The bandwidth of digital data signal
TL;DR: The purpose of the present article is to explore the subject of data transmission bandwidth through an examination of its various definitions, as the spectrum is finite, yet as technology manipulates it, a dazzling increase in bandwidth capability emerges.
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