Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems

In one of our previous papers, we designed an ultra-low power non-coherent MFSK system using 2-pole bandpass filters to replace matched filters for detection and showed the performance loss between our proposed system and the optimal MFSK system using matched filters for detection was no greater tha...

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Main Authors: Yi Xiang, Laurence B. Milstein
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10011412/
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author Yi Xiang
Laurence B. Milstein
author_facet Yi Xiang
Laurence B. Milstein
author_sort Yi Xiang
collection DOAJ
description In one of our previous papers, we designed an ultra-low power non-coherent MFSK system using 2-pole bandpass filters to replace matched filters for detection and showed the performance loss between our proposed system and the optimal MFSK system using matched filters for detection was no greater than 1.2 dB in all alphabet size, phase continuity and channel conditions we analyzed. In this paper, we improve our previous design by considering the power-bandwidth tradeoff, and we show that we can save a large percentage of system bandwidth by sacrificing a small amount of power, when the demodulator and coding parameters are optimized. For example, we can save 50&#x0025; of system bandwidth at the cost of 1 dB loss in performance compared to our previous system design. We further extend the results to include Gaussian filtering, we quantify the performance loss as a function of both the system bandwidth saved and the time-bandwidth product of the Gaussian filter, and we compare the performance of the <inline-formula> <tex-math notation="LaTeX">$M$ </tex-math></inline-formula>-ary GFSK system with the corresponding MFSK system.
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spelling doaj.art-e08153a51637434ba4bc060b19fed0432023-02-21T00:00:57ZengIEEEIEEE Access2169-35362023-01-01113942395410.1109/ACCESS.2023.323525310011412Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK SystemsYi Xiang0https://orcid.org/0000-0003-3739-5969Laurence B. Milstein1Department of Electrical and Computer Engineering (ECE), University of California San Diego, La Jolla, CA, USADepartment of Electrical and Computer Engineering (ECE), University of California San Diego, La Jolla, CA, USAIn one of our previous papers, we designed an ultra-low power non-coherent MFSK system using 2-pole bandpass filters to replace matched filters for detection and showed the performance loss between our proposed system and the optimal MFSK system using matched filters for detection was no greater than 1.2 dB in all alphabet size, phase continuity and channel conditions we analyzed. In this paper, we improve our previous design by considering the power-bandwidth tradeoff, and we show that we can save a large percentage of system bandwidth by sacrificing a small amount of power, when the demodulator and coding parameters are optimized. For example, we can save 50&#x0025; of system bandwidth at the cost of 1 dB loss in performance compared to our previous system design. We further extend the results to include Gaussian filtering, we quantify the performance loss as a function of both the system bandwidth saved and the time-bandwidth product of the Gaussian filter, and we compare the performance of the <inline-formula> <tex-math notation="LaTeX">$M$ </tex-math></inline-formula>-ary GFSK system with the corresponding MFSK system.https://ieeexplore.ieee.org/document/10011412/M-ary FSKM-ary GFSKmultipath fadingultra-low power-consumptionnon-coherent detectionlow-complexity filtering
spellingShingle Yi Xiang
Laurence B. Milstein
Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
IEEE Access
M-ary FSK
M-ary GFSK
multipath fading
ultra-low power-consumption
non-coherent detection
low-complexity filtering
title Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
title_full Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
title_fullStr Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
title_full_unstemmed Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
title_short Power-Bandwidth Tradeoff for Ultra-Low Power MFSK and G-MFSK Systems
title_sort power bandwidth tradeoff for ultra low power mfsk and g mfsk systems
topic M-ary FSK
M-ary GFSK
multipath fading
ultra-low power-consumption
non-coherent detection
low-complexity filtering
url https://ieeexplore.ieee.org/document/10011412/
work_keys_str_mv AT yixiang powerbandwidthtradeoffforultralowpowermfskandgmfsksystems
AT laurencebmilstein powerbandwidthtradeoffforultralowpowermfskandgmfsksystems