Performance Analysis of 64-TQAM by Transmitting Image Over AWGN Channel

Authors : Pooja Kaushik, Shalini Kashyap.

Volume/Issue : Volume 3 - 2018, Issue 4 - April

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Orthogonal Frequency Division Multiplexing (OFDM) technique allows simultaneous transmission of multiple signals over a single communication link, thus increasing the efficiency of the link. Quadrature Amplitude Modulation (QAM) is an attractive technique to achieve high transmission rate without increasing bandwidth. Also orthogonal systems have the property that as the number of orthogonal signals/channels increases, the performance graph becomes better. Due to this OFDM and QAM system were combined and has been used over decades showing the better performance. Triangular-QAM is a new modulation technique and the work done so far indicates it is better than Square QAM. Thus if TQAM is combined with OFDM, there should be a performance increase overall. In this thesis the TQAMOFDM system is simulated and performance is compared with the SQAM-OFDM systems with the help of quality of image transmitted over the systems, constellation diagrams and BER curves.

Keywords : SQAM, TQAM, BER, OFDM, Constellation.


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