Signal power reduction systems and methods
AssigneeCable Television Laboratories, Inc.
InventorsThomas H. Williams, Gregory Charles White
Life of this patent
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Abstract
A method of reducing transmission power for an encoded data stream includes the steps of receiving an incoming data stream having equal probability for a plurality of incoming data bits, assigning a symbol scheme to the received data bits of the incoming data stream according to probabilities of occurrence of individual ones of the received data bits, and transmitting an outgoing data stream according to the assigned symbol scheme having a second average transmit power, different than the first average transmit power, for a plurality of outgoing symbols.
Claims20
A method of reducing transmission power for an encoded data stream comprising the steps of:
- receiving an incoming data stream having a first average transmit power for a plurality of incoming data bits;
- assigning a symbol scheme to the received data bits of the incoming data stream according to probabilities of occurrence of individual ones of the received data bits;
- and
- transmitting an outgoing data stream according to the assigned symbol scheme having a second average transmit power, different than the first average transmit power, for a plurality of outgoing symbols,
- wherein a probability of occurrence for a first portion of the plurality of outgoing symbols is greater than an equal probability, and a probability of occurrence for a second portion of the plurality of outgoing symbols is less than an equal probability.
A symbol transmission system for encoding a data stream comprising:
- a memory;
- and
- a processor communicatively coupled with the memory, said processor programmed to execute instructions to:
- receive an incoming data stream of binary data bits;
- determine a probability of occurrence the binary data bits;
- assign a symbol scheme to the incoming data stream based on the determined probability, wherein the assigned symbol scheme includes a first plurality of symbols having a lower probability than the determined probability and a second plurality of symbols having a greater probability than the determined probability;
- and
- transmit an outgoing data stream according to the assigned symbol scheme.
Dependencies are inferred from the claim text.