A sectored receiver for infrared wireless networks

Abstract

This paper presents an experimental sectored receiver for infrared wireless networks. The receiver comprises two sectors, each with a switched gain front-end and a signal-to-noise ratio estimator. These are then interconnected with a best-sector selector unit, able to compensate the gain switching characteristics of the front-ends. The circuit has been designed in a 0.8µm CMOS technology.

Performance Evaluation of Single-Channel Receivers for Wireless Optical Communications by Numerical Simulations

“…These inconveniences make infrared systems demand high levels of optical power to achieve a sufficient signal-to-noise ratio (SNR), and limit high-speed performance. To mitigate such inconveniences, a wide choice of transmitters and receivers designs have been proposed so far (Alves et al, 2000;Bellon et al, 1999;Carruther & Kahn, 2000;Jivkova & Kavehrad, 2001;Jungnickel et al, 2003;Yun & Kavehrad, 1992). Among all, the combined use of multibeam transmitters and angle diversity receivers has become the preferred solution in the literature (Carruther & Kahn, 2000;Djahani & Kahn, 2000;Jivkova & Kavehrad, 2001).…”