RECEIVER APPARATUS FOR USE IN OPTICAL SPACE TRANSMISSION SYSTEM
First Claim
1. A receiver apparatus, for use in an optical space transmission, operable to receive a plurality of optical signals which are converted from a plurality of transmission electrical signals and emitted through space, the receiver apparatus comprising:
- a plurality of light receiving sections for receiving the plurality of optical signals and respectively converting the received plurality of optical signals to a plurality of electrical signals;
a first calculating section for subjecting the plurality of electrical signals to a process of canceling interference components occurring due to propagation of the plurality of optical signals through the space; and
a second calculating section for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a value of a distortion occurring due to optical beat interference is less than or equal to a predetermined permissible value.
1 Assignment
0 Petitions
Accused Products
Abstract
There included are a plurality of light receiving sections (121, 122) for receiving a plurality of optical signals (R1, R2) and respectively converting the received optical signals to a plurality of electrical signals (r1, r2); a first calculating section (130) for subjecting the plurality of electrical signals (r1, r2) to a process of canceling interference components occurring due to propagation of the plurality of optical signals through space; and a second calculating section (140) for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a distortion occurring due to optical beat interference has a value less than or equal to a predetermined permissible value.
-
Citations
13 Claims
-
1. A receiver apparatus, for use in an optical space transmission, operable to receive a plurality of optical signals which are converted from a plurality of transmission electrical signals and emitted through space, the receiver apparatus comprising:
-
a plurality of light receiving sections for receiving the plurality of optical signals and respectively converting the received plurality of optical signals to a plurality of electrical signals; a first calculating section for subjecting the plurality of electrical signals to a process of canceling interference components occurring due to propagation of the plurality of optical signals through the space; and a second calculating section for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a value of a distortion occurring due to optical beat interference is less than or equal to a predetermined permissible value. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A reception method for use in an optical space transmission, in which a plurality of optical signals converted from a plurality of transmission electrical signals and emitted through space, are received, the method comprising the steps of:
-
receiving the plurality of optical signals and respectively converting the received optical signals to a plurality of electrical signals; canceling, with respect to the plurality of electrical signals, interference components occurring due to propagation of the plurality of optical signals through the space; and calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a value of a distortion occurring due to optical beat interference is less than or equal to a predetermined permissible value. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A program executed by a receiver apparatus, for use in an optical space transmission, operable to receive a plurality of optical signals which are converted from a plurality of transmission electrical signals and emitted through space, the program comprising the steps of:
-
receiving the plurality of optical signals and respectively converting the received plurality of optical signals to a plurality of electrical signals; subjecting the plurality of electrical signals to a process of canceling interference components occurring due to propagation of the plurality of optical signals through the space; and calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a value of a distortion occurring due to optical beat interference is less than or equal to a predetermined permissible value.
-
Specification