Weighted open loop power control transmitter cross reference to related applications
First Claim
1. A weighted open loop power control transmitter for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication, the transmitter comprising:
- a demodulator configured to receive the transmitted modulated communication burst and generate a baseband signal;
a channel estimation device configured to receive the baseband signal and extract channel information from the baseband signal;
a data estimation device configured to interpret the power level of the communication burst;
a weighted open loop power controller, said weighted open loop power controller comprising;
a power measurement device for receiving the extracted channel information from the channel estimation device, a pathloss estimation device configured to receive the interpreted power level from the data estimation device and estimate the pathloss (L) and update a long term average of the pathloss (L0) between the receiver unit and the transmitter unit, a quality measurement device to determine the quality of the estimated pathloss and weight the estimated pathloss by a weighting factor (α
), and a transmit power calculation device, wherein the transmit power calculation device for determining the transmitter'"'"'s unit power level and to control the receiver'"'"'s unit amplifier.
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Accused Products
Abstract
A weighted open loop power control transmitter for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication includes a demodulator configured to receive a transmitted signal from the receiver, a channel estimation device, a data estimation device, and a weighted open loop power controller. The weighted open loop power controller includes a power measurement device, a pathloss estimation device configured to receive an interpreted power level from the data estimation device and estimate the pathloss and update a long term average of the pathloss, a quality measurement device, and a transmit power calculation device for determining the transmitter'"'"'s power level and to control the receiver'"'"'s amplifier.
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Citations
2 Claims
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1. A weighted open loop power control transmitter for controlling transmission power levels using a spread spectrum time division duplex (TDD) technique having frames with timeslots for communication, the transmitter comprising:
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a demodulator configured to receive the transmitted modulated communication burst and generate a baseband signal;
a channel estimation device configured to receive the baseband signal and extract channel information from the baseband signal;
a data estimation device configured to interpret the power level of the communication burst;
a weighted open loop power controller, said weighted open loop power controller comprising;
a power measurement device for receiving the extracted channel information from the channel estimation device, a pathloss estimation device configured to receive the interpreted power level from the data estimation device and estimate the pathloss (L) and update a long term average of the pathloss (L0) between the receiver unit and the transmitter unit, a quality measurement device to determine the quality of the estimated pathloss and weight the estimated pathloss by a weighting factor (α
), and a transmit power calculation device, wherein the transmit power calculation device for determining the transmitter'"'"'s unit power level and to control the receiver'"'"'s unit amplifier. - View Dependent Claims (2)
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Specification