Optically Based Direct Sequence Binary Phase Shift Keying Modulation Scheme for Indoor Ultrawide-Band Wireless Systems

2006 ◽  
Vol 45 (4A) ◽  
pp. 2598-2602 ◽  
Author(s):  
Wen-Piao Lin ◽  
Yuan-Ching Chen
2016 ◽  
Vol 4 (2) ◽  
pp. 172-180
Author(s):  
Barkha Pandey ◽  
Raghu Harsh Kalia ◽  
Monica Kaushik ◽  
Monika Arora

In a last few decades there has been tremendous growth and a drastic rise in wireless communication technologies. The major issue that the world is facing today with the advent of so many sophisticated wireless communication devices is efficient utilization of the spectrum. Spectrum efficiency comes together with a tradeoff factor of energy consumption. Thus, the need of the hour is an energy and bandwidth efficient technique. DS-CDMA is one of the competitive and most investigated technique in wireless communication which caters the large demand at the same time with limited bandwidth. Existing modulation techniques does not promise to provide better performance in case of higher noise. Therefore, one looks for a better BER stipulated modulation format to improve and enhance the performance of the system. This article revisits conventional Binary phase shift keying method and compares its performance in terms of BER with a special Extended Binary Phase Shift Keying (EBPSK) modulation format for a DS- CDMA system. EBPSK scheme is flexible and simple which is easily integrated in a network and assures improved and enhanced performance.


Spektral ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Nabila Khansa Hartono ◽  
Faradila Alvina Putri ◽  
Fitri Elvira Ananda

Spread spectrum is a data transmission technique that spreads out information spectrum energy signals in a frequency band that is much larger than the minimal spectrum. One of the spread spectrum techniques is Direct Sequence Spread Spectrum (DSSS). This research was built the simulation of DSSS on Binary Phase Shift Keying (BPSK) modulation using MATLAB software. The simulation results of this DSSS simulation are displaying information wave signals, PN codes, signals that have been added with PN codes, signals modulated with BPSK, modulation signals that have been added with AWGN noise, demodulation signals, DSSS output signals and BER vs SNR graphics on the channel AWGN. The simulator of DSSS on BPKS in this research have been running according to the DSSS signal order flow and theoretical concept.   Keywords: AWGN, BPSK , DSSS, PN Code, PN Sequence


2018 ◽  
Vol 162 ◽  
pp. 165-175 ◽  
Author(s):  
J.A. Michel-Macarty ◽  
M.A. Murillo-Escobar ◽  
R.M. López-Gutiérrez ◽  
C. Cruz-Hernández ◽  
L. Cardoza-Avendaño

2015 ◽  
Vol 3 (3) ◽  
pp. 58 ◽  
Author(s):  
Jinting Wang ◽  
Linjie Zhou ◽  
Haike Zhu ◽  
Rui Yang ◽  
Yanyang Zhou ◽  
...  

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