Analog Orthogonal Multitone Signal Generation for OFDM Transceiver

This paper is concerned with design and an integrated circuit implementation of multicarrier quadrature phase generators for application in analog spectral synthesis and orthogonal frequency division multiplexing transceiver using amplitude phase shift keying using 0.18mum technology. A novel analog or sampled data based rotational quadrature oscillator has been designed for generating quadrature signals. Schemes of multicarrier generation studied include (a) a sine/cosine shaping by folding triangular waves and (b) multiple frequency generation, using regenerative frequency dividers and mixers. Simulation results and performance of different schemes of multicarrier generation are compared. These schemes show very low power consumption than typical method of multi-frequency signal synthesis using IFFT