Resumo-Este artigo apresenta a implementação de um transmissor FM (mono) totalmente digital em FPGA, utilizando os algoritmos coordinate rotation digital computer (CORDIC), cascaded integrator comb (CIC) e high-pass sigma-delta modulator (HPSDM). O transmissor FM digital é sintetizado em um FPGA, simulado seu comportamento e seu funcionamento é avaliado em um kit de desenvolvimento. Os resultados experimentais obtidos mostram o funcionamento adequado do transmissor FM implementado. Palavras-Chave-CORDIC, FPGA, HPSDM, Transmissor FM.Abstract-A fully digital FPGA implementation of a FM (mono) transmitter using the CORDIC, CIC, and HPSDM algorithms is demonstrated here. The FM transmitter is synthesized on an FPGA, its behavior is simulated and its hardware implementation is evaluated on development kit. The experimental results obtained show the suitable performance of this FM transmitter design and implementation.

In this paper we present the tests and performance For a more detailed description of the proposed system, we evaluations carried out on the modulation system for the refer the reader to [1]. terrestrial Digital Television System (MI-SBTVD) described in [1]. All the results were obtained using computer simulated models, portraying relevant operating scenarios based on well-established channel models. The results obtained in this work have allowed us II. TELEVISION CHANNEL CHARACTERIZATION to estimate the expected system performance on working conditions as different as, for example, reception through single, ITU [4] suggests some typical channel profiles that can be fixed external antenna and single-antenna mobile reception. used to test the system with fixed reception (Brazil-A through Keywords BodatnSytmDiBrazil-E) and mobile reception (Typical Urban GSM/TU-Time Code, LDPC, Performance Evaluation. GSM). Such profiles are adequate for tests of DTV systems because they represent a wide range of typical situations where