SYSTEM AND METHOD FOR DESCRAMBLING THE PHASE OF CARRIERS IN A MULTICARRIER COMMUNICATIONS SYSTEM
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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.
5 Citations
41 Claims
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1-20. -20. (canceled)
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21. A method for adjusting a phase characteristic of a plurality of carriers in a multicarrier communications transceiver comprising:
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assigning, by the transceiver, carrier numbers to the plurality of carriers; and assigning, by the transceiver, a phase shift to the plurality of carriers; wherein the phase shift is based on a predetermined equation that depends on the carrier number, wherein the phase shift is independent of any bit value carried by the plurality of carriers, and wherein the phase shift of a first carrier of the plurality of carriers is different than the phase shift of a second carrier of the plurality of carriers. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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- 28. A multicarrier communications transceiver capable of adjusting a phase characteristic of a plurality of carriers, the transceiver capable of assigning carrier numbers to the plurality of carriers and assigning a phase shift to the plurality of carriers wherein the phase shift is based on a predetermined equation that depends on the carrier number, the phase shift is independent of any bit value carried by the plurality of carriers, and wherein the phase shift of a first carrier of the plurality of carriers is different than the phase shift of a second carrier of the plurality of carriers.
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35. A non-transitory computer readable information storage media, having stored thereon instructions, that when executed by one or more processors, cause to be performed that perform a method for adjusting a phase characteristic of a plurality of carriers in a multicarrier communications transceiver comprising:
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assigning, by the transceiver, carrier numbers to the plurality of carriers; and assigning, by the transceiver, a phase shift to the plurality of carriers; wherein the phase shift is based on a predetermined equation that depends on the carrier number, wherein the phase shift is independent of any bit value carried by the plurality of carriers, and wherein the phase shift of a first carrier of the plurality of carriers is different than the phase shift of a second carrier of the plurality of carriers. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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Specification
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- Resources
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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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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current375/219
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CPC 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
