Showing papers by "John D. Reed published in 1994"
Patent•
13 Dec 1994TL;DR: In this paper, the authors measured the fading characteristic of a communication channel between the subscriber unit and a base site and compared with a threshold value, and repeated the measuring and comparing until the fading characteristics crossed a threshold.
Abstract: After setting a base station to a transmit power level (12) which provides a signal at a subscriber unit having a target quality level, a fading characteristic of a communication channel between the subscriber unit and a base site is measured (13) The fading characteristic is then compared with a threshold value (14) The measuring (13) and comparing (14) are repeated until the fading characteristic crosses a threshold (15) Once the fading characteristic crosses the threshold for a receive Eb/No level that is representative of a eg static fading condition, the base transmit power that is transmitted to the subscriber is increased by a predetermined amount in anticipation of the need for an increased Eb/No for the case of a faded signal (61) The determination of the fading characteristic and threshold comparison may be performed at either the subscriber unit or the base station
110 citations
Patent•
24 Jan 1994TL;DR: In this paper, the authors measured the fading characteristic of a communication channel between the subscriber unit and a base site and compared with threshold values, and repeated the measuring and comparing until the fading characteristics crossed a threshold (15, 60, 62).
Abstract: After setting a subscriber unit to a transmit power level (12) which provides a signal at a base site having a target quality level, a fading characteristic of a communication channel between the subscriber unit and a base site is measured (13). The fading characteristic is then compared with threshold values (14). The measuring (13) and comparing (14) are repeated until the fading characteristic crosses a threshold (15, 60, 62). Once the fading characteristic crosses the threshold, the target quality level is set to a new target level (16, 61, 63). A subscriber unit (70) designed to accomplish this method comprises a receiver (72) which receives an RF signal. The received signal is averaged in an averaging device (73) and compared with the original signal in a differential amplifier (74). The output of the comparison is used by a controller (75) to determine power control adjustments to a transmitter (76).
14 citations