scholarly journals Spectrum Sensing and Error Rate Analysis by Cognitive Radio Users using Welch’s Power Spectral for High Data Rate Applications

2017 ◽  
Vol V (III) ◽  
pp. 639-643
Author(s):  
S. Keerthana
Keyword(s):  
Cognitive Radio ◽  
Spectrum Sensing ◽  
Error Rate ◽  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Rate Analysis ◽  
Power Spectral

scholarly journals Performance of UWB-WBAN System Over Awgn Channel

2018 ◽  
Vol 15 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Mohanad F. Abdulhamid ◽  
Onyango Ben Sewe
Keyword(s):  
Signal To Noise Ratio ◽  
Additive White Gaussian Noise ◽  
Wireless Body Area Network ◽  
Wide Band ◽  
Data Rate ◽  
High Data Rate ◽  
Area Network ◽  
Body Area ◽  
High Data ◽  
Power Spectral

Abstract The major constraints in the design of Wireless Body Area Network(WBAN) can be attributed to the battery autonomy, need for high data rate services and low interference from the devices operating within the industrial, scientific and medical (ISM) bands. To meet the demand for high data rate services and low power spectral density to avoid ISM band interference, an ultra-wide band(UWB) system based technology has been proposed. This paper focuses on the design and demonstration of an UWB modem to be used in the WBAN applications and the evaluation of its performance in a near-real world scenarios affected by additive white Gaussian noise(AWGN) interference. The modem is tested with different values of signal to noise ratio(SNR). Results show that the performance of the modem degrades as the value of SNR decreases.

scholarly journals Improvement of bit error rate performance of MC-CDMA system by using adaptive digital modulation schemes

2018 ◽  
Vol 7 (3.3) ◽  
pp. 663
Author(s):  
Jaya T ◽  
M Monisha ◽  
M Meena ◽  
C Sharanya
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Adaptive Modulation ◽  
Data Rate ◽  
High Data Rate ◽  
Cdma System ◽  
Digital Modulation ◽  
High Data ◽  
Cdma Systems ◽  
Modulation Schemes

In Wireless Communication, the transmission channel suffers due to multipath propagation and channel dispersion due to Inter Symbol Interference (ISI), thereby degrades the system performance greatly. Future communication requires high data rate and effective utilization of bandwidth. Hence, there is a need to improve the Bit Error Rate (BER). The proposed work is Adaptive Modulation (AM), combined with Multi Carrier Code Division Multiple Access (MC-CDMA) based transmission system. It is a promising way to increase the data rate and it uses bandwidth in a efficient manner. The Adaptive Modulation based MC-CDMA systems applied to a wide-area environment, can achieve high data rate up to 100Mbps. In this paper M-ary PSK, M-ary QAM and M-ary CPM modulation techniques are used. The Adap-tive modulation based MC-CDMA systems perform well for around 10 number of users. As a whole, the adaptive MC-CDMA system is found to give the optimum BER performance of given digital modulation schemes for fourth generation environment.  

Interference measurements for high data rate TDMA transmission through ACTS

1998 ◽  
Author(s):  
Robert Kerczewski ◽  
Duc Ngo ◽  
Diepchi Tran ◽  
Quang Tran ◽  
Brian Kachmar
Keyword(s):  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Interference Measurements
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