Adaptive Coding and Modulation Scheme for Ka Band Space Communications

Cognitive Radio for Ka Band Satellite Communications

The satellite communication data traffic is increasing dramatically over the coming years. High throughput multibeam satellite networks in Ka band are potentially able to accommodate the upcoming high data rate demands. However, there is only 500 MHz of exclusive band for download and the same amount for upload. This spectrum shortage impose a barrier in order to satisfy the increasing demands....

Decoding Techniques and A Modulation Scheme for Band - limited Communications

Adaptive power and rate control for satellite communications in Ka band

Adaptive power and rate control for efficient use of satellite channels in the Ka band are considered. Fading due to rain is modeled as a log-normally distributed, auto-regressive process with known statistics. Adaptation policies based on MMSE channel estimation are designed taking into account the effect of channel estimation errors in an optimal manner so as to satisfy the required outage pr...

Rain Fade Compensation for Ka-Band Communications Satellites

Deep-Space Optical Communications Downlink Budget: Modulation and Coding

A link budget for a deep-space optical channel depends in part on the choice of modulation format and error-control coding scheme. This article describes several properties of the channel capacity that lead to an appropriate selection of modulation format, pulse-position modulation (PPM) order, and error-control code rate. It also describes performance limits when additional constraints—such as...