System and method for improved communication utilizing velocity related information
First Claim
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1. A method for communication, the method comprising:
- receiving, by a receiver, a first pre-distorted modulated signal sent by a transmitter, the first pre-distorted modulated signal comprising Doppler error and a first transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the first pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the first modulated signal by a first increment to compensate for a first predicted velocity based error in the first modulated signal;
receiving, by the receiver, a second pre-distorted modulated signal sent by the transmitter, the second pre-distorted modulated signal comprising Doppler error and a second transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the second pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the second modulated signal by a second increment to compensate for a second predicted velocity based error in the second modulated signal, wherein the second increment is different than the first increment;
receiving at least one further transmitter velocity vector at a rate depending at least in part upon change of the Doppler error due to movement of the transmitter with respect to the receiver; and
if a first predetermined condition exists, compensating for at least one velocity-based error in at least one of the first and second pre-distorted modulated signals by demodulating the first and second pre-distorted modulated signals and at least the at least one further transmitter velocity vector, the demodulation comprising using at least one of the first and further transmitter velocity vectors for frequency adjustment to compensate for the Doppler error of at least one of the received first and second pre-distorted modulated signal.
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Abstract
According to one embodiment, a method for communication includes receiving, by a receiver, a first modulated signal. The first modulated signal includes at least one error. The method also includes demodulating the first modulated signal. The demodulation includes compensating for the at least one error utilizing information related to a velocity of the receiver.
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Citations
24 Claims
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1. A method for communication, the method comprising:
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receiving, by a receiver, a first pre-distorted modulated signal sent by a transmitter, the first pre-distorted modulated signal comprising Doppler error and a first transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the first pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the first modulated signal by a first increment to compensate for a first predicted velocity based error in the first modulated signal; receiving, by the receiver, a second pre-distorted modulated signal sent by the transmitter, the second pre-distorted modulated signal comprising Doppler error and a second transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the second pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the second modulated signal by a second increment to compensate for a second predicted velocity based error in the second modulated signal, wherein the second increment is different than the first increment; receiving at least one further transmitter velocity vector at a rate depending at least in part upon change of the Doppler error due to movement of the transmitter with respect to the receiver; and if a first predetermined condition exists, compensating for at least one velocity-based error in at least one of the first and second pre-distorted modulated signals by demodulating the first and second pre-distorted modulated signals and at least the at least one further transmitter velocity vector, the demodulation comprising using at least one of the first and further transmitter velocity vectors for frequency adjustment to compensate for the Doppler error of at least one of the received first and second pre-distorted modulated signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for communication, the system comprising:
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a first node operable to; receive, by a receiver, a first pre-distorted modulated signal sent by a transmitter, the first pre-distorted modulated signal comprising Doppler error and a first transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the first pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the first modulated signal by a first increment to compensate for a first predicted velocity based error in the first modulated signal; receiving, by the receiver, a second pre-distorted modulated signal sent by the transmitter, the second pre-distorted modulated signal comprising Doppler error and a second transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the second pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the second modulated signal by a second increment to compensate for a second predicted velocity based error in the second modulated signal, wherein the second increment is different than the first increment; receive at least one further transmitter velocity vector at a rate depending at least in part upon change of the Doppler error due to movement of the transmitter with respect to the receiver; determine whether a predetermined condition exists; and if the predetermined condition exists, demodulate the first and second pre-distorted modulated signals and the at least one further transmitter velocity vector, the demodulation comprising using at least one of the first and further transmitter velocity vectors for frequency adjustment to compensate for the Doppler error of at least one of the received first and second pre-distorted modulated signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for communication, the method comprising:
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generating, by a transmitter, a first pre-distorted modulated signal for transmission to a receiver, the first pre-distorted modulated signal comprising Doppler error and a first transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the first pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the first modulated signal by a first increment to compensate for a first predicted velocity based error in the first modulated signal; generating, by the transmitter, a second pre-distorted modulated signal, the second pre-distorted modulated signal comprising Doppler error and a second transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the second pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the second modulated signal by a second increment to compensate for a second predicted velocity based error in the second modulated signal, wherein the second increment is different than the first increment; and generating further transmitter velocity vectors at a rate dependent at least in part upon change of the Doppler error due to movement of the transmitter with respect to the receiver; wherein, if a predetermined condition exists, the receiver uses the first and second pre-distorted modulated signals and the further transmitter velocity vectors for frequency adjustment to compensate for the Doppler error of the received signals. - View Dependent Claims (16, 17, 18)
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19. A system for communication, the system comprising:
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a first node operable to;
;generate, by a transmitter, a first pre-distorted modulated signal for transmission to a receiver, the first pre-distorted modulated signal comprising Doppler error and a first transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the first pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein the pre-distorting comprises adjusting the first modulated signal by a first increment to compensate for a first predicted velocity based error in the first modulated signal; generate, by the transmitter, a second pre-distorted modulated signal, the second pre-distorted modulated signal comprising Doppler error and a second transmitter velocity vector corresponding to movement of the transmitter with respect to the receiver, wherein the second pre-distorted modulated signal is pre-distorted prior to its being received at the receiver, wherein die pre-distorting comprises adjusting the second modulated signal by a second increment to compensate for a second predicted velocity based error in the second modulated signal wherein the second increment is different than the first increment; and generate further transmitter velocity vectors at a rate dependent at least in part upon change of the Doppler error due to movement of the transmitter with respect to the receiver; wherein, if a predetermined condition exists, the first and second pre-distorted modulated signals and the further transmitter velocity vectors are configured to enable the receiver to use the transmitter-velocity vectors-for frequency adjustment to compensate for the Doppler error of the received signals. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification