Hardware Architecture for Ultra-Wideband Channel Impulse Response Measurements Using Compressed Sensing

2021 ◽  
Author(s):  
Christoph W. Wagner ◽  
Sebastian Semper ◽  
Florian Romer ◽  
Anna Schonfeld ◽  
Giovanni Del Galdo
Keyword(s):  
Compressed Sensing ◽  
Impulse Response ◽  
Hardware Architecture ◽  
Ultra Wideband ◽  
Channel Impulse Response ◽  
Wideband Channel

scholarly journals Scale experimental measurement of impulse response UWB emitters.

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
A.M. Bobreshov ◽  
◽  
S.E. Neskorodov ◽  
K.V. Smuseva ◽  
G.K. Uskov ◽  
...  
Keyword(s):  
Impulse Response ◽  
Measurement Technique ◽  
Experimental Measurement ◽  
Ultra Wideband ◽  
Channel Impulse Response ◽  
Measured Signal ◽  
Experimental Measurements ◽  
Biconical Antenna ◽  
Tikhonov’S Regularization

This work presents the results of experimental measurements of the impulse response of ultra-wideband emitters: a biconical antenna and a symmetrical dipole. A measurement technique was presented. The channel impulse response is calculated using Tikhonov’s regularization. It is shown that the measured signal corresponds to calculated.

scholarly journals Window-Based Channel Impulse Response Prediction for Time-Varying Ultra-Wideband Channels

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0164944 ◽  
Author(s):  
A. M. Al-Samman ◽  
M. H. Azmi ◽  
T. A. Rahman ◽  
I. Khan ◽  
M. N. Hindia ◽  
...  
Keyword(s):  
Impulse Response ◽  
Response Prediction ◽  
Ultra Wideband ◽  
Channel Impulse Response ◽  
Time Varying ◽  
Wideband Channels

scholarly journals Estimation of Compressible Channel Impulse Response for OFDM Modulated Transmissions

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2781
Author(s):  
Grzegorz Dziwoki ◽  
Marcin Kucharczyk
Keyword(s):  
Compressed Sensing ◽  
Impulse Response ◽  
Signal To Noise Ratio ◽  
Least Square ◽  
Channel Impulse Response ◽  
Reconstruction Method ◽  
Reconstruction Procedure ◽  
Initial Block ◽  
User Data ◽  
Estimation Scheme

Channel estimation scheme for OFDM modulated transmissions usually combines an initial block-pilot-assisted stage with a tracking one based on comb or scattered pilots distributed among user data in the signal frame. The channel reconstruction accuracy in the former stage has a significant impact on tracking efficiency of the channel variations and the overall transmission quality. The paper presents a new block-pilot-assisted channel reconstruction procedure based on the DFT-based approach and the Least Square impulse response estimation. The proposed method takes into account a compressibility feature of the channel impulse response and restores its coefficients in groups of automatically controlled size. The proposition is analytically explained and tested in a OFDM simulation environment. The popular DFT-based methods including compressed sensing oriented one were used as references for comparison purposes. The obtained results show a quality improvement in terms of Bit Error Rate and Mean Square Error measures in low and mid ranges of signal-to-noise ratio without significant computational complexity growth in comparison to the classical DFT-based solutions. Moreover, additional multiplication operations can be eliminated, compared to the competitive, in terms of estimation quality, compressed sensing reconstruction method based on greedy approach.

scholarly journals A Multi-Static Radar Network with Ultra-Wideband Radio-Equipped Devices

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1599 ◽  
Author(s):  
Anton Ledergerber ◽  
Raffaello D’Andrea
Keyword(s):  
Impulse Response ◽  
Mobile Phones ◽  
Smart Home ◽  
Matched Filter ◽  
Ultra Wideband ◽  
Channel Impulse Response ◽  
Time Stamp ◽  
Security Systems ◽  
Radar Network ◽  
Wideband Radio

A growing number of devices, from car key fobs to mobile phones to WiFi-routers, are equipped with ultra-wideband radios. In the network formed by these devices, communicating modules often estimate the channel impulse response to employ a matched filter to decode transmitted data or to accurately time stamp incoming messages when estimating the time-of-flight for localization. This paper investigates how such measurements of the channel impulse response can be utilized to augment existing ultra-wideband communication and localization networks to a multi-static radar network. The approach is experimentally evaluated using off-the-shelf hardware and simple, distributed filtering, and shows that a tag-free human walking in the space equipped with ultra-wideband modules can be tracked in real time. This opens the door for various location-based smart home applications, ranging from smart audio and light systems to elderly monitoring and security systems.

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