In a pioneering move to bolster the precision of Global Navigation Satellite Systems (GNSS), researchers have crafted advanced processing techniques for subcarrier modulated signals. These innovations ...

Fig. 1: A simplified linear detector circuit of the Bose FM multiplex detector from the patent documents. Fig. 2: John Bose enjoys a hearty meal in the Alpine FM transmitter building in July, 1939.

The CP-OFDM modulation scheme will have many options. Variable subcarrier spacing (SCS) will be 3.75, 15, 30, 60, 120, 240, 480 kHz with sub-1 GHz of 15 and 30 kHz and sub-6 GHz of 15, 30, and 60 kHz, ...

Figure 1. Details of NTSC FDM spectrum around the chrominance subcarrier. Click here to see an enlarged diagram. In 1941, after many experiments with television, the Federal Communications Commission ...

Multicarrier modulation techniques partition a wideband communication channel into numerous parallel subchannels, enabling high data rates and robust performance under multipath fading. Orthogonal ...

The author is president of Omnia Audio in Cleveland. The FM stereo transmission system employed in worldwide broadcasting has been in place since 1961. The rules governing stereophonic performance ...