MATLAB development of QAM system to transmit data over an audio channel. The receiver is currently unable to detect or correct for constellation rotation errors of -90, 180, or 90 degrees. QAM4 ...

The code allows M-ary QAM system designs to incorporate unmodulated carrier-pilot insertion techniques using high-pass filters, for more robust, unambiguous carrier recovery and automatic gain control ...

In this paper, we propose a new quadrature amplitude modulation (QAM) based filter bank multi-carrier (FBMC) system using faster-than-Nyquist (FTN) scheme with block-wise interleaved filters. The ...

The block diagram of the simple two-stage CPE algorithm for 32-QAM is shown in Figure 2, ... conventional QPSK partitioning algorithm uses only a few constellation points for carrier-phase estimation ...