Method and apparatus for minimizing co-channel interference by scrambling
First Claim
Patent Images
1. A method of minimizing co-channel interference in a communication system, the method comprising the steps of:
- assigning a first scrambling sequence, associated with a header or a pilot sequence of a first assigning a second scrambling sequence, associated with a header or a pilot sequence of a second frame, to a second co-channel that is adjacent to the first co-channel, wherein non-header portions of the frames are scrambled according to the respective different scrambling sequences.
2 Assignments
0 Petitions
Accused Products
Abstract
An approach is provided for minimizing co-channel interference in a communication system is disclosed. Non-header portions of frames, which are transmitted over the communication system, are scrambled according to respective different scrambling sequences. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.
67 Citations
29 Claims
-
1. A method of minimizing co-channel interference in a communication system, the method comprising the steps of:
-
assigning a first scrambling sequence, associated with a header or a pilot sequence of a first assigning a second scrambling sequence, associated with a header or a pilot sequence of a second frame, to a second co-channel that is adjacent to the first co-channel, wherein non-header portions of the frames are scrambled according to the respective different scrambling sequences. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An apparatus for minimizing co-channel interference in a communication system, comprising:
-
a scrambler configured to assign a first scrambling sequence, associated with a header or a pilot sequence of a first frame, to a first co-channel, wherein the scrambler assigns a second scrambling sequence, associated with a header or a pilot sequence of a second frame, to a second co-channel that is adjacent to the first co-channel, wherein non-header portions of the frames are scrambled according to the respective scrambling sequences. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method for communicating in a radio communication system, the method comprising the steps of:
-
transmitting a plurality of frames over different communication channels established over the radio communication system, the communication channels being adjacent co-channels, wherein each of the frames includes a header and a pilot sequence for synchronization of carrier phase and carrier frequency, and non-header portions of the frames are scrambled according to respective different scrambling sequences to minimize interference between the co-channels. - View Dependent Claims (23)
-
-
24. An apparatus for communicating in a radio communication system, comprising:
-
a transmitter configured to transmit a plurality of frames over different communication channels established over the radio communication system, wherein the communication channels are adjacent co-channels, wherein each of the frames includes a header and a pilot sequence for synchronization of carrier phase and carrier frequency, and non-header portions of the frames are scrambled according to respective different scrambling sequences to minimize interference between the co-channels. - View Dependent Claims (25)
-
-
26. A method for communicating in a radio communication system, the method comprising the steps of:
-
receiving a plurality of frames over different communication channels established over the radio communication system, the communication channels being adjacent co-channels, wherein each of the frames includes a header and a pilot sequence for synchronization of carrier phase and carrier frequency, and non-header portions of the frames are scrambled according to respective different scrambling sequences to minimize interference between the co-channels. - View Dependent Claims (27)
-
-
28. An apparatus for communicating in a radio communication system, comprising:
-
a receiver configured to receive a plurality of frames over different communication channels established over the radio communication system, wherein the communication channels are adjacent co-channels, wherein each of the frames includes a header and a pilot sequence for synchronization of carrier phase and carrier frequency, and non-header portions of the frames are scrambled according to respective different scrambling sequences to minimize interference between the co-channels. - View Dependent Claims (29)
-
Specification