Study on multipath effect under the environment of PCM/FM telemetry soft demodulation

Fu Gang; Wu Yanjun; Renlong Li; Li Wang

doi:10.4028/www.scientific.net/AMM.602-605.2298

Study on multipath effect under the environment of PCM/FM telemetry soft demodulation

Fu Gang, Wu Yanjun, Renlong Li, Li Wang

Research output: Contribution to conference › Paper › peer-review

Abstract

Because the reentry telemetry wireless channel multipath propagation effects and the effect, channel will introduce transmission time delay dispersion, caused between the PCM/FM telemetry signal crosstalk and signal to noise ratio is too low, significantly increase BER. While traditional demodulation method because the demodulator threshold higher no longer apply. Study the problem, a multiple Symbol Detection method based on sliding strategy (Multi - Symbol Detection, MSD), can effectively overcome the low SNR and inter symbol interference. The simulation and test results verify the effectiveness of the method.

Original language	English
Pages	2298-2301
Number of pages	4
DOIs	https://doi.org/10.4028/www.scientific.net/AMM.602-605.2298
Publication status	Published - 2014
Event	2nd International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2014 - Duration: 30 May 2014 → …

Conference

Conference	2nd International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2014
Period	30/05/14 → …

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title = "Study on multipath effect under the environment of PCM/FM telemetry soft demodulation",

abstract = "Because the reentry telemetry wireless channel multipath propagation effects and the effect, channel will introduce transmission time delay dispersion, caused between the PCM/FM telemetry signal crosstalk and signal to noise ratio is too low, significantly increase BER. While traditional demodulation method because the demodulator threshold higher no longer apply. Study the problem, a multiple Symbol Detection method based on sliding strategy (Multi - Symbol Detection, MSD), can effectively overcome the low SNR and inter symbol interference. The simulation and test results verify the effectiveness of the method.",

author = "Fu Gang and Wu Yanjun and Renlong Li and Li Wang",

year = "2014",

doi = "10.4028/www.scientific.net/AMM.602-605.2298",

language = "English",

pages = "2298--2301",

note = "2nd International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2014 ; Conference date: 30-05-2014",

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AU - Gang, Fu

AU - Yanjun, Wu

AU - Li, Renlong

AU - Wang, Li

PY - 2014

Y1 - 2014

N2 - Because the reentry telemetry wireless channel multipath propagation effects and the effect, channel will introduce transmission time delay dispersion, caused between the PCM/FM telemetry signal crosstalk and signal to noise ratio is too low, significantly increase BER. While traditional demodulation method because the demodulator threshold higher no longer apply. Study the problem, a multiple Symbol Detection method based on sliding strategy (Multi - Symbol Detection, MSD), can effectively overcome the low SNR and inter symbol interference. The simulation and test results verify the effectiveness of the method.

AB - Because the reentry telemetry wireless channel multipath propagation effects and the effect, channel will introduce transmission time delay dispersion, caused between the PCM/FM telemetry signal crosstalk and signal to noise ratio is too low, significantly increase BER. While traditional demodulation method because the demodulator threshold higher no longer apply. Study the problem, a multiple Symbol Detection method based on sliding strategy (Multi - Symbol Detection, MSD), can effectively overcome the low SNR and inter symbol interference. The simulation and test results verify the effectiveness of the method.

U2 - 10.4028/www.scientific.net/AMM.602-605.2298

DO - 10.4028/www.scientific.net/AMM.602-605.2298

M3 - Paper

SP - 2298

EP - 2301

T2 - 2nd International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2014

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