Hardware implementation of adaptive modulation for OFDM and SOQPSK with preliminary results

Abstract

This paper presents a hardware implementation of a transceiver that employs both OFDM and SOQPSK-TG burst-mode signals, and it also presents an adaptive modulation and coding algorithm that uses both waveforms for the AWGN channel. The implementation complies very closely with the iNET physical layer, in which both modulations, along with an LDPC code, are used in a multi-scheme adaptation algorithm. The adaptive scheme is intended to explore the use of an adaptive algorithm for telemetry systems. The hardware implementations are described and experimental results are presented.