Matlab- Based Interference Mitigation in WPAN IR-UWB

2015 ◽  
Vol 3 (2) ◽  
pp. 1-14
Author(s):  
Abbas Saleh Hassan
Keyword(s):  
Short Range ◽  
Interference Mitigation ◽  
Impulse Radio ◽  
Ultra Wideband ◽  
Area Network ◽  
Wireless Technology ◽  
Technology System ◽  
Rake Receivers ◽  
High Data ◽  
Layer Solution

Impulse Radio - Ultra Wideband (IR-UWB) is a wireless technology system that offers a high data rate within a short range. Therefore, IR-UWB system is regarded as an excellent physical layer solution to the multi-piconet Wireless Personal Area Network (WPAN) applications. In spite of all the advantages of IR-UWB, there are several fundamental and practical challenges that need to be carefully addressed. The big and most important one among these challenges is the interference. Two types of Rake receivers are designed and simulated to highly mitigate the MUI these are (PRake receiver) and (SRake receiver).

scholarly journals Integrating Ultra-Wideband and Free Space Optical Communication for Realizing a Secure and High Throughput Body Area Network Architecture Based on Optical Code Division Multiple Access

2021 ◽  
Author(s):  
Jawad Mirza ◽  
Waqas Imtiaz ◽  
Salman Abdul Ghafoor
Keyword(s):  
Health Care ◽  
Care Center ◽  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Health Care Center ◽  
High Data ◽  
Data Rates ◽  
Code Division Multiple

Abstract Nodes in a body area network (BAN) are miniature wearable or implantable battery-powered wireless sensors which continuously transmit real time vital physiological data of a patient to remote health-care center while remaining in close proximity to the human body. Therefore, BAN nodes should have the features of high data rates and low transmit powers in order to protect the human body, environment and bio-medical equipment from harmful exposure of electromagnetic radiations and electromagnetic interference (EMI). Ultra-wideband (UWB) signals have low allowable transmission power and high data rates. Therefore, we propose a low cost, low powered and secure optical body area network (OBAN) composed of four UWB-BAN nodes each transmitting at a data rate of 30 Mbps. At the control node, UWB signals from UWB-BAN nodes are encoded using spectral amplitude coding-optical code division multiple access (SAC-OCDMA) scheme and the combined signal is transmitted over free space optics (FSO) channel towards remote health-care center. At the health-care center, the combined signal is decoded and UWB signal of each UWB-BAN node is photodetected for analysis of patient's data. Log-Normal channel model is considered between control node and the health-care center. The signal received from each UWB-BAN after propagation through the FSO channel is analyzed through Bit error rate (BER) results. It was observed that the proposed architecture requires the UWB-BAN nodes to have low receiver sensitivities with the added benefits of cost-efficiency and data security.

scholarly journals Pulse Sign Separation Technique for the Received Bits in Wireless Ultra-Wideband Combination Approach

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Rashid A. Fayadh ◽  
F. Malek ◽  
Hilal A. Fadhil
Keyword(s):  
Ultra Wideband ◽  
Separation Technique ◽  
Phase Shift Keying ◽  
Rake Receivers ◽  
High Data ◽  
Multiple User ◽  
Shift Keying ◽  
Combination Approach ◽  
User Interference ◽  
Binary Phase Shift Keying

When receiving high data rate in ultra-wideband (UWB) technology, many users have experienced multiple-user interference and intersymbol interference in the multipath reception technique. Structures have been proposed for implementing rake receivers to enhance their capabilities by reducing the bit error probability (Pe), thereby providing better performances by indoor and outdoor multipath receivers. As a result, several rake structures have been proposed in the past to reduce the number of resolvable paths that must be estimated and combined. To achieve this aim, we suggest two maximal ratio combiners based on the pulse sign separation technique, such as the pulse sign separation selective combiner (PSS-SC) and the pulse sign separation partial combiner (PSS-PC) to reduce complexity with fewer fingers and to improve the system performance. In the combiners, a comparator was added to compare the positive quantity of positive pulses and negative quantities of negative pulses to decide whether the transmitted bit was 1 or 0. ThePewas driven by simulation for multipath environments for impulse radio time-hopping binary phase shift keying (TH-BPSK) modulation, and the results were compared with those of conventional selective combiners (C-SCs) and conventional partial combiners (C-PCs).

On the Selection of Optimum Threshold Bound of Body Surface to External Communication in Body Area Network

2018 ◽  
Vol 7 (1) ◽  
pp. 15-24
Author(s):  
Sukhraj Kaur ◽  
Jyoteesh Malhotra
Keyword(s):  
Body Surface ◽  
Channel Model ◽  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Rake Receivers ◽  
Link Performance ◽  
Optimum Threshold ◽  
Selection Of

This article investigates the optimum threshold bounds for the signal travelling through a body surface to external nodes of a body area network. An ultra-wideband system ranging from 3.1-10.6 GHz is used for the observations of the signal transmitting through different body directions using NICT's statistical model. Through simulative investigation, the link performance is evaluated by calculating outage probability using sub-optimum Rake receivers, which are based on either partial combining (P-Rake) or selective combining (S-Rake). The optimum numbers of Rake taps are also identified. The obtained results give an assessment to better understand the effect of body direction and Rake structure on the selection of optimum threshold bounds for a channel model CM4 of body area communication.

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