Method and apparatus for minimizing co-channel interference
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Abstract
An approach is provided for minimizing co-channel interference in a communication system is disclosed. A header of a first frame is scrambled based on a first unique word. A header of a second frame is scrambled based on a second unique word. The first frame including the corresponding scrambled header and the second frame including the corresponding scrambled header are transmitted, respectively, over adjacent co-channels of the communication system. Each of the frames further includes a payload and a pilot block. The payload and the pilot block of the first frame are scrambled based on a first scrambling sequence. The payload and the pilot block of the second frame are scrambled based on a second scrambling sequence. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.
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Citations
60 Claims
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1-39. -39. (canceled)
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40. A method of communicating, comprising:
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scrambling a first frame using a first sequence and a second frame using a second sequence; and
transmitting the scrambled first frame and the scrambled second frame over a plurality of co-channels. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. An apparatus comprising:
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a scrambler configured to scramble a first frame using a first sequence and a second frame using a second sequence; and
means for transmitting the scrambled first frame and the scrambled second frame over a plurality of co-channels. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58)
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59. An apparatus comprising:
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a tuner configured to tune to a default carrier to receive scrambling information, wherein the scrambling information includes a unique word and a scrambling sequence corresponding to a particular carrier among a plurality of adjacent carriers, the unique word and the scrambling sequence being selected to minimize co-channel interference with respect to the adjacent carriers, wherein the tuner is further configured to tune to the particular carrier for receiving a scrambled frame including a header, a payload, and a pilot block; and
a descrambler configured to descramble the header with the unique word and the payload and the pilot block with the scrambling sequence. - View Dependent Claims (60)
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Specification