System and method for scrambling using a bit scrambler and a phase scrambler
DC CAFC
First Claim
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1. A method, in a multicarrier communications transceiver comprising a bit scrambler followed by a phase scrambler, comprising:
- scrambling, using the bit scrambler, a plurality of input bits to generate a plurality of scrambled output bits, wherein at least one scrambled output bit is different than a corresponding input bit;
scrambling, using the phase scrambler, a plurality of carrier phases associated with the plurality of scrambled output bits;
transmitting at least one scrambled output bit on a first carrier; and
transmitting the at least one scrambled output bit on a second carrier.
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3 Petitions
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Accused Products
Abstract
A system and method that demodulates the phase characteristic of a carrier signal are described. The scrambling of the phase characteristic of each carrier signal includes associating a value with each carrier signal and computing a phase shift for each carrier signal based on the value associated with that carrier signal. The value is determined independently of any input bit value carried by that carrier signal. The phase shift computed for each carrier signal is combined with the phase characteristic of that carrier signal so as to substantially scramble the phase characteristic of the carrier signals. Bits of an input signal are modulated onto the carrier signals having the substantially scrambled phase characteristic to produce a transmission signal with a reduced PAR.
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Citations
25 Claims
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1. A method, in a multicarrier communications transceiver comprising a bit scrambler followed by a phase scrambler, comprising:
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scrambling, using the bit scrambler, a plurality of input bits to generate a plurality of scrambled output bits, wherein at least one scrambled output bit is different than a corresponding input bit; scrambling, using the phase scrambler, a plurality of carrier phases associated with the plurality of scrambled output bits; transmitting at least one scrambled output bit on a first carrier; and transmitting the at least one scrambled output bit on a second carrier. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multicarrier communications transceiver comprising:
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a bit scrambler operable to scramble a plurality of input bits to generate a plurality of scrambled output bits, wherein at least one scrambled output bit is different than a corresponding input bit; a phase scrambler operable to scramble a plurality of carrier phases associated with the plurality of scrambled output bits; and a transmitter portion operable to transmit at least one scrambled output bit on a first carrier and to transmit the at least one scrambled output bit on a second carrier. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A communication device comprising:
a multicarrier transmitter operable to support a bit scrambler and a phase scrambler for transmission of a plurality of input bits, wherein the bit scrambler is operable to scramble the plurality of input bits to generate a plurality of scrambled output bits, wherein at least one scrambled output bit is different than a corresponding input bit, and wherein the phase scrambler is operable to scramble a plurality of phases associated with the plurality of input bits. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method comprising:
supporting, in a communication device comprising a multicarrier communications transceiver, a bit scrambler and a phase scrambler for transmission of a plurality of input bits wherein the bit scrambler scrambles the plurality of input bits to generate a plurality of scrambled output bits, wherein at least one scrambled output bit is different than a corresponding input bit, and wherein the phase scrambler scrambles a plurality of phases associated with the plurality of input bits. - View Dependent Claims (21, 22, 23, 24, 25)
Specification
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Litigation Data
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Current AssigneeTQ Delta LLC (Techquity Capital Management, LLC)
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Original AssigneeTQ Delta LLC (Techquity Capital Management, LLC)
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InventorsTzannes, Marcos C.
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Primary Examiner(s)Joseph, Jaison
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Application NumberUS13/718,016Publication NumberTime in Patent Office854 DaysField of Search375/222, 375/340, 375/341US Class Current375/220CPC Class CodesH04B 1/38 Transceivers, i.e. devices ...H04B 1/40 CircuitsH04L 25/03866 using scramblingH04L 27/20 Modulator circuits; Transmi...H04L 27/2601 Multicarrier modulation sys...H04L 27/2614 Peak power aspectsH04L 27/2621 Reduction thereof using pha...H04L 27/2627 Modulators
