Apparatus and method for channel estimation without signaling overhead
First Claim
1. A base station for communicating with a subscriber station in a wireless network, the base station capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and data symbol to the subscriber station, the base station comprising:
- an amplifier; and
a power meter and automatic gain control block configured to measure a power level of the data symbol and generate gain control signals,wherein the amplifier is configured to receive the gain control signals and adjust a power level of the pilot signal to be below the power level of the data symbol.
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Accused Products
Abstract
A base station is disclosed for communicating with a subscriber station in a wireless network without requiring training signaling overhead. The base station is capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and data symbol to the subscriber station. A power level of the pilot signal is below a power level of the data symbol. The base station may be a single-input, single-output (SISO) antenna system or a multiple-input, multiple-output (MIMO) antenna system.
16 Citations
20 Claims
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1. A base station for communicating with a subscriber station in a wireless network, the base station capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and data symbol to the subscriber station, the base station comprising:
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an amplifier; and a power meter and automatic gain control block configured to measure a power level of the data symbol and generate gain control signals, wherein the amplifier is configured to receive the gain control signals and adjust a power level of the pilot signal to be below the power level of the data symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for transmitting from a base station of a wireless network to a subscriber station, the method comprising the steps of:
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generating a pilot signal; measuring a power level of a data symbol; generating gain control signals based on the power level of the data symbol; based on the gain control signals, adjusting a power level of the pilot signal to be below the power level of the data symbol; combining the pilot signal with the data symbol; and transmitting the combined the pilot signal and data symbol to the subscriber station. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A system for wireless communications, the system comprising:
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at least one base station for communicating with a subscriber station in a wireless network, and capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and data symbol to the subscriber station, each of the at least one base station comprising; an amplifier; and a power meter and automatic gain control block configured to measure a power level of the data symbol and generate gain control signals, wherein the amplifier is configured to receive the gain control signals and adjust a power level of the pilot signal to be below the power level of the data symbol. - View Dependent Claims (19, 20)
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Specification