Ultra-wideband direct-sequence impulse radio wireless communications

2005 ◽  
Author(s):  
Xiaoli Chu
Keyword(s):  
Wireless Communications ◽  
Impulse Radio ◽  
Ultra Wideband ◽  
Direct Sequence

scholarly journals Controlling sequence length of DS-IR-UWB to enhance performance of multi-WBAN systems

2018 ◽  
Vol 69 (5) ◽  
pp. 373-378
Author(s):  
Nguyen Cong Dinh ◽  
Pham Thanh Hiep ◽  
Obinata Yua ◽  
Vu Van Son
Keyword(s):  
Control Method ◽  
Impulse Radio ◽  
Ultra Wideband ◽  
Packet Error Rate ◽  
Sequence Length ◽  
Secure Communications ◽  
Spreading Code ◽  
Direct Sequence ◽  
Body Area ◽  
Fixed Sequence

Abstract The international standard of wireless body area networks (WBANs), ie IEEE 802.15.6, was established in Feb. 2012, and this standard decided spreading code as a suppressing interference technology. However, the sequence length of spreading code is fixed, hence it is difficult to guarantee secure communications due to noise and interference from other WBANs. In this paper, we propose utilizing direct sequence impulse radio ultra wideband (DS-IR-UWB) for multi-WBAN systems, and then analyze multi-WBAN systems theoretically, derive equations of inter-WBAN interference, packet error rate (PER) and throughput. Furthermore, to guarantee secure communications, the desired PER is introduced, and then an algorithm is proposed to take the control of sequence length of DS-IR-UWB in order to ensure that the PER of system is always below the desired PER while maximizing the throughput. The numerical evaluation shows that the sequence length of proposed control method is changed according to the SNR and the number of WBANs, it lets the proposed algorithm of control of sequence length outperform the conventional fixed sequence length method.

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).

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