This paper presents a practicable scheme for building a high-frequency, direct digital-to-RF transmitter. The transmitter uses a simple look-up table to generate a binary output stream which then is filtered to produce a radiated signal, so that there is no need for precise digital-to-analog converters. The look-up table entries are produced by a new constrained list decoding algorithm operating over the real alphabet. This all-digital transmitter can be a modulator only, or a combined encoder and modulator and supports the direct generation of RF signals using currently available high-speed CMOS. The paper concludes with spectra having carrier frequencies over 10 GHz and data rates up to 1200 Mbps.

This paper presents a practicable scheme for building high frequency direct digitizing transmitters. The transmitter uses a simple look up table approach to generate a binary stream which is then merely filtered to produce the radiated signal. Thus, there is no need for precise digital to analog converters. A new constrained list decoding algorithm operating over the real alphabet produces the data in the look up table. The transmitter can be a modulator only or a combined encoder and modulator. The paper concludes with spectra and error vector magnitude measurements for GMSK with frequencies over 10 Ghz

The paper presents a. practical scheme for building high frequency direct digitizing transmitters. The transmitter uses a. simple lookup table approach to generate a binary stream which is then merely filtered to produce the radiated signal. Thus, there is no need for precise digital to analog converters. A new constrained list decoding algorithm operating over the real alphabet produces the data in the lookup table. The transmitter can be a modulator only or a combined encoder and modulator. The paper concludes with spectra and error vector magnitude measurements for GMSK with frequencies over 10 GHz.