An investigation of OFDM-CDMA waveforms using different modulation schemes on HF multipath/fading channels

2004 ◽  
Author(s):  
John W. Nieto
Keyword(s):  
Fading Channels ◽  
Multipath Fading ◽  
Multipath Fading Channels ◽  
Modulation Schemes

scholarly journals Study of Modulation Schemes over a Multipath Fading Channels

2021 ◽  
Vol 7 (10) ◽  
pp. 34-39
Author(s):  
Karthik Kumar Vaigandla, Allanki Sanyasi Rao and Kallepelli Srikanth
Keyword(s):  
Wireless Communication ◽  
Fading Channels ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Wireless Channels ◽  
Multipath Fading ◽  
Rician Fading ◽  
Multipath Fading Channels ◽  
High Data ◽  
Modulation Schemes

Communications systems concerted over wireless channels depend on the environment. Communications system can be more reliable and efficient by properly analyzing wireless channels. Today's most important features are a high data rate and reliable performance to exploiting viable networks during this new information age. The channel is not time-invariant in wireless communication, so the received signal exhibits amplitude, phase, and angle variations due to multipath fading. Increasing data rates and reducing bandwidth make Orthogonal Frequency Division Multiplexing (OFDM) an important component of wireless communication systems. The OFDM technique uses many carriers very efficiently. With this scheme, interference is robustly reduced, and fading scenarios are easily accommodated. Analyzing digital modulation schemes requires evaluating link performance with fading channels. The paper compares channel performance over varying fading environments using a variety of modulation schemes. We study the BER and SNR properties of the AWGN, Rician fading and Rayleigh fading channels modulated with BPSK, QPSK, and M-ary QAM.

scholarly journals DFT-modulated filterbank transceivers for multipath fading channels

2005 ◽  
Vol 53 (1) ◽  
pp. 182-192 ◽  
Author(s):  
S.-M. Phoong ◽  
Yubing Chang ◽  
Chun-Yang Chen
Keyword(s):  
Fading Channels ◽  
Multipath Fading ◽  
Multipath Fading Channels
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