Pulse shape optimization and channel equalization for teletext transmission over multipath channels

Sheau B. Ng; D. Raychaudhuri

doi:10.1109/TCE.1985.289999

Pulse shape optimization and channel equalization for teletext transmission over multipath channels

Research output: Contribution to journal › Article › peer-review

Abstract

A study of teletext transmission over multipath channels is reported. Computer simulated results are used to measure the performance of various Nyquist pulses. An optimal pulse shape for teletext transmission is obtained. The multipath channel parameters are modelled as random variables. A simple multipath cancellation shceme in which the estimated delay signal is subtracted from the received signial using a feedback system is developed. The amount of delay is initialized to the estimated value from a matched-filter-estimator. The delay is then adaptively adjusted to maximize the eye opening. A significant gain in signal performance is found to be obtainable from this equalizer.

Original language	English (US)
Pages (from-to)	667-672
Number of pages	6
Journal	IEEE Transactions on Consumer Electronics
Volume	CE-31
Issue number	4
DOIs	https://doi.org/10.1109/TCE.1985.289999
State	Published - Jun 28 1985
Externally published	Yes

All Science Journal Classification (ASJC) codes

Media Technology
Electrical and Electronic Engineering

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10.1109/TCE.1985.289999

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abstract = "A study of teletext transmission over multipath channels is reported. Computer simulated results are used to measure the performance of various Nyquist pulses. An optimal pulse shape for teletext transmission is obtained. The multipath channel parameters are modelled as random variables. A simple multipath cancellation shceme in which the estimated delay signal is subtracted from the received signial using a feedback system is developed. The amount of delay is initialized to the estimated value from a matched-filter-estimator. The delay is then adaptively adjusted to maximize the eye opening. A significant gain in signal performance is found to be obtainable from this equalizer.",

author = "Ng, {Sheau B.} and D. Raychaudhuri",

year = "1985",

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N2 - A study of teletext transmission over multipath channels is reported. Computer simulated results are used to measure the performance of various Nyquist pulses. An optimal pulse shape for teletext transmission is obtained. The multipath channel parameters are modelled as random variables. A simple multipath cancellation shceme in which the estimated delay signal is subtracted from the received signial using a feedback system is developed. The amount of delay is initialized to the estimated value from a matched-filter-estimator. The delay is then adaptively adjusted to maximize the eye opening. A significant gain in signal performance is found to be obtainable from this equalizer.

AB - A study of teletext transmission over multipath channels is reported. Computer simulated results are used to measure the performance of various Nyquist pulses. An optimal pulse shape for teletext transmission is obtained. The multipath channel parameters are modelled as random variables. A simple multipath cancellation shceme in which the estimated delay signal is subtracted from the received signial using a feedback system is developed. The amount of delay is initialized to the estimated value from a matched-filter-estimator. The delay is then adaptively adjusted to maximize the eye opening. A significant gain in signal performance is found to be obtainable from this equalizer.

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Pulse shape optimization and channel equalization for teletext transmission over multipath channels

Abstract

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