BER Analysis of the IEEE 802.15.4a Channel Model with RAKE Receiver

2006 ◽  
Author(s):  
Wei-cheng Liu ◽  
Li-chun Wang
Keyword(s):  
Channel Model ◽  
Rake Receiver ◽  
Ieee 802.15.4A ◽  
Ber Analysis

Error Probability Analysis of Time-Hopping Biorthogonal Pulse Position Modulation UWB Systems with a RAKE Receiver over Indoor Multi-Path Fading Channels

2012 ◽  
Vol 433-440 ◽  
pp. 2011-2018
Author(s):  
Hao Zhang ◽  
Wei Shi ◽  
Ting Ting Lv ◽  
T. Aaron Gulliver
Keyword(s):  
Fading Channels ◽  
Error Probability ◽  
Channel Model ◽  
Rake Receiver ◽  
Low Complexity ◽  
Probability Analysis ◽  
Ultra Wideband ◽  
Pulse Position Modulation ◽  
Probability Of Error ◽  
Time Hopping

This paper presents the error probability analysis of Time-Hopping Biorthogonal Pulse Position Modulation (TH-BPPM) ultra-wideband (UWB) systems with a RAKE receiver over indoor multi-path fading channels. UWB signals suffer from severe multi-path interference when employed in an indoor fading environment. A RAKE receiver can be used to improve the performance of UWB systems. TH-BPPM has attracted much attention in recent years due to its many advantages, such as low probability of error and low complexity. In this paper, the IEEE 802.15.3a indoor channel model is employed to analyze the performance of TH-BPPM UWB systems with different RAKE receivers. The bit error rate (BER) of ARake, PRake, and SRake TH-BPPM UWB systems is derived. The results indicate that ARake has the best performance, SRake is better than PRake when the number of fingers is same.

scholarly journals BER analysis of FSO system with Airy beam as carrier over exponentiated Weibull channel model

2021 ◽  
Vol 53 (12) ◽  
Author(s):  
Xingchun Chu ◽  
Rongjiang Liu ◽  
Yi Li ◽  
Yanhui Ni ◽  
Xiang Wang ◽  
...  
Keyword(s):  
Channel Model ◽  
Airy Beam ◽  
Exponentiated Weibull ◽  
Ber Analysis

scholarly journals Performance Evaluation of Adaptive Continuous Wavelet Transform based Rake Receiver for UWB Systems

2018 ◽  
Vol 8 (5) ◽  
pp. 3444
Author(s):  
Ch. Navitha ◽  
K. Sivani ◽  
K. Ashoka Reddy
Keyword(s):  
Wavelet Transform ◽  
Continuous Wavelet Transform ◽  
High Speed ◽  
Channel Model ◽  
Rake Receiver ◽  
Training Data ◽  
Ultra Wideband ◽  
Line Of Sight ◽  
Continuous Wavelet ◽  
Channel Models

This paper proposes an adaptive continuous wavelet transform (ACWT) based Rake receiver to mitigate interference for high speed ultra wideband (UWB) transmission. The major parts of the receiver are least mean square (LMS) adaptive equalizer and N-selective maximum ratio combiner (MRC). The main advantage of using continuous wavelet rake receiver is that it utilizes the maximum bandwidth (7.5GHz) of the UWB transmitted signal, as announced by the Federal Communication Commission (FCC). In the proposed ACWT Rake receiver, the weights and the finger positions are updated depending upon the convergence error over a period in which training data is transmitted. Line of sight (LOS) channel model (CM1 from 0 to 4 meters) and the Non line of sight (NLOS) channel models (CM, CM3 and CM4) are the indoor channel models selected for investigating in this research . The performance of the proposed adaptive system   is evaluated by comparing with conventional rake and continuous wavelet transform (CWT) based rake. It showed an improved performance in all the different UWB channels (CM1 to CM4) for rake fingers of 2, 4 and 8. Simulations showed that for 8 rake fingers, the proposed adaptive CWT rake receiver has shown an SNR improvement of 2dB, 3dB, 10dB and 2dB respectively over CWT rake receiver in different UWB channels CM1, CM2, CM3 and CM4.

Channel Loss Estimation and Test of Ultra-Wideband Propagation from 2 to 10 GHz Application

2017 ◽  
Vol 6 (3) ◽  
pp. 663
Author(s):  
Lei Gao ◽  
Qun Chen
Keyword(s):  
Short Range ◽  
Channel Model ◽  
Transmission Loss ◽  
Reference Model ◽  
Ultra Wideband ◽  
Estimation Methods ◽  
Loss Model ◽  
Ieee 802.15.4A ◽  
Channel Loss ◽  
Wideband Radio

<p>This paper deals with the channel loss models of ultra-wideband radio wave propagation from 2 to 10 GHz application. IEEE 802.15.4a and Okumura channel loss reference models have been introduced and the estimation methods of channel transmission loss have been discussed with the environments of 2 to 10 GHz short range application. The channel transmission loss was measured in ZigBee circuit with 2 kinds of power, using IEEE 802.15.4a and Okumura channel model to estimate the theoretical channel loss, the theoretical value and the actual measured value were compared and analyzed. The analysis shows that the error between the calculated value and the actual measured value of the IEEE 802.15.4a reference model is small in the ultra-wideband ZigBee channel environment, and the error of the Okumura channel loss model is large. The results show that in the environments of 2 to 10 GHz short range application, IEEE 802.15.4a channel loss model is a high precision reference model for the ultra-wideband channel loss calculation.</p>

scholarly journals PERFORMANCE ANALYSIS OF DS-CDMA SYSTEM FOR UNDERWATER ACOUSTIC COMMUNICATIONS

2021 ◽  
Vol 5 (9) ◽  
Author(s):  
Haoxin Kang
Keyword(s):  
Spread Spectrum ◽  
Channel Model ◽  
Linear Time ◽  
Signal To Noise Ratio ◽  
Rake Receiver ◽  
Direct Sequence Spread Spectrum ◽  
Error Rates ◽  
Underwater Acoustic Communications ◽  
Linear Time Invariant ◽  
Scatter Plots

We choose direct sequence spread spectrum (DSSS)technologies combined with Rake receiver under the modulation of BPSK to establish the communication modem. The performance of the modem is extensively investigated by MATLAB based simulation. We analysis the bit error rates (BER) against signal to noise ratio (SNR) corresponding to different parameter settings, for instance, under different Pseudo noise (PN)codes, the long of PN code period, the modulation schemes. Regarding to the Rake receiver, we also compare the scatter plots to deduce whether rake has better performance than without rake, furthermore we change the taps of the rake and diversity combining schemes to continue comparing the BER performance. The modem is implemented in a linear time invariant (LTI)channel model.

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