scholarly journals A Reconfigurable Low If-Zero If Receiver Architecture for Multi Standard Wireless Systems Using a Reconfigurable Filter

2017 ◽  
Vol 2 (2) ◽  
pp. 01-12
Author(s):  
Mahmoud Eissa
Keyword(s):  
Wireless Systems ◽  
Receiver Architecture

scholarly journals Signal processing for transmitted-reference ultra wideband system

2021 ◽  
Author(s):  
Alston L. Emmanuel ◽  
Xavier N. Fernando
Keyword(s):  
Wavelet Analysis ◽  
Performance Improvement ◽  
System Performance ◽  
Channel Model ◽  
Wireless Systems ◽  
Ultra Wideband ◽  
Ieee 802.11A ◽  
Transmitted Reference ◽  
Receiver Architecture ◽  
Notch Filtering

This thesis focuses on transmitted-reference ultra wideband (TR-UWB) systems coexistence with IEEE802.11a WLAN systems. TR-UWB systems can relax the difficult synchronization requirements and can provide a simple receiver architecture that gathers the energy from many resolvable multipath components. However, UWB TR systems are susceptible to interference which comes from other wireless systems. In this thesis, TR-UWB system performance is studied in the presence of strong IEEE 802.11a WLAN interference in both AWGN and IEEE channel model. In order to reduce both the effects of interference by and into UWB signals, we propose a new method in conjunction with a multi-carrier type transmission pulse using wavelet analysis and notch filtering. Using wavelet analysis, spectral density of the transmitted UWB signal around the interfering band is reduced by 60 dB lower than the peak. With the modified TR-UWB receiver, the TR-UWB system shows performance improvement in the presence of strong IEEE 8-2.11a interference in both AWGN and IEEE channel models. The proposed method can be used for the coexistence of different wireless systems with UWB system.

scholarly journals Signal processing for transmitted-reference ultra wideband system

2021 ◽  
Author(s):  
Alston L. Emmanuel ◽  
Xavier N. Fernando
Keyword(s):  
Wavelet Analysis ◽  
Performance Improvement ◽  
System Performance ◽  
Channel Model ◽  
Wireless Systems ◽  
Ultra Wideband ◽  
Ieee 802.11A ◽  
Transmitted Reference ◽  
Receiver Architecture ◽  
Notch Filtering

This thesis focuses on transmitted-reference ultra wideband (TR-UWB) systems coexistence with IEEE802.11a WLAN systems. TR-UWB systems can relax the difficult synchronization requirements and can provide a simple receiver architecture that gathers the energy from many resolvable multipath components. However, UWB TR systems are susceptible to interference which comes from other wireless systems. In this thesis, TR-UWB system performance is studied in the presence of strong IEEE 802.11a WLAN interference in both AWGN and IEEE channel model. In order to reduce both the effects of interference by and into UWB signals, we propose a new method in conjunction with a multi-carrier type transmission pulse using wavelet analysis and notch filtering. Using wavelet analysis, spectral density of the transmitted UWB signal around the interfering band is reduced by 60 dB lower than the peak. With the modified TR-UWB receiver, the TR-UWB system shows performance improvement in the presence of strong IEEE 8-2.11a interference in both AWGN and IEEE channel models. The proposed method can be used for the coexistence of different wireless systems with UWB system.

Performance Evaluation of OFDM Wireless Systems using CAZAC Equalization

2018 ◽  
Vol 138 (3) ◽  
pp. 204-209
Author(s):  
Yushi Shirato ◽  
Ryota Ishioka ◽  
Masahiro Muraguchi
Keyword(s):  
Performance Evaluation ◽  
Wireless Systems

Improving Performance by Countering Human Body Shadowing in 60GHz Band Wireless Systems by Using Two Transmit and Two Receive Antennas

2016 ◽  
Vol E99.B (2) ◽  
pp. 422-429
Author(s):  
Tomoaki NAGAYAMA ◽  
Shigeki TAKEDA ◽  
Masahiro UMEHIRA ◽  
Kenichi KAGOSHIMA ◽  
Teruyuki MIYAJIMA
Keyword(s):  
Human Body ◽  
Wireless Systems

Novel MEMS Dipole/Monopole Antenna for Wireless Systems Operating at 77 GHz

PIERS Online ◽  
2010 ◽  
Vol 6 (6) ◽  
pp. 547-550 ◽  
Author(s):  
Ezzeldin A. Soliman ◽  
Sherif Sedky ◽  
M. O. Sallam ◽  
S. Hassan ◽  
O. El Katteb ◽  
...  
Keyword(s):  
Wireless Systems ◽  
Monopole Antenna ◽  
77 Ghz
Sign in / Sign up

Export Citation Format

Share Document