High Rate Data Transmission System Based on OFDM for Well Logging

2014 ◽  
Vol 644-650 ◽  
pp. 3476-3479
Author(s):  
Qing Shui Gu ◽  
Wei Chen ◽  
Rui Qing Wu
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Data Transmission ◽  
Well Logging ◽  
Transmission System ◽  
High Rate ◽  
Rate Data ◽  
Frequency Domain Equalization ◽  
Transmission Data ◽  
Data Transmission System

Designed a high rate data transmission system based on OFDM for well logging. The system used time domain equalization and frequency domain equalization. The transmission data rate of the system can reach 1.2Mbps over 7440 meters CAMESA cable, and its BER is less than .

scholarly journals Sub Carrier Analysis for QAM Modulation

2017 ◽  
Vol 6 (4) ◽  
pp. 354-357
Author(s):  
S. Shanmugasundaram
Keyword(s):  
Data Transmission ◽  
Orthogonal Frequency Division Multiplexing ◽  
Transformation Method ◽  
Transmission System ◽  
Rate Data ◽  
Modulation Technique ◽  
Wireless Data Transmission ◽  
Qam Modulation ◽  
Data Transmission System ◽  
Carrier Analysis

Orthogonal Frequency Division Multiplexing (OFDM) based wireless data transmission system is a multi-carrier system in which single higher rate data stream can be divided into multiple lower rate data streams. Modulation and De-Modulation technique play a major role in OFDM based data transmission system. Based on Modulation technique only, the frequency transformation method and encoding and decoding methods are enabled. Effective modulation techniques called as “Quadrature Amplitude Modulation (QAM)” modulation are used to design an OFDM System. Carrier signal is one of the important signals used to modulate the original signal. Analyzing the sub-carrier signal for getting the quality of the modulated signal.

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