Method and apparatus for performing channel estimation and equalization based on a signal field of a received packet
First Claim
1. A network device comprising:
- a receiver module configured to receive a packet wirelessly transmitted over a channel to the network device, wherein the packet comprises a signal field, and wherein the signal field (i) comprises a plurality of bits, or (ii) has a corresponding plurality of sub-carriers;
a first channel estimate module configured to, (i) based on the signal field, perform a plurality of determinations, wherein each of the plurality of determinations indicates whether a respective one of the plurality of bits or a respective one of the plurality of sub-carriers has been modulated with a first predetermined value or a second predetermined value, and (ii) based on the plurality of determinations, output a first channel estimate of the channel; and
a frequency equalizer configured to (i) receive a first signal comprising the packet, and (ii) equalize the first signal based on the first channel estimate.
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Accused Products
Abstract
A network device including a receiver module, a first channel estimate module, and a frequency equalizer. The receiver module is configured to receive a packet wirelessly transmitted over a channel to the network device, where the packet comprises a signal field, and where the signal field (i) comprises bits, or (ii) has corresponding sub-carriers. The first channel estimate module is configured to, (i) based on the signal field, perform multiple determinations, where each of the determinations indicates whether a respective one of the bits or a respective one of the sub-carriers has been modulated with a first predetermined value or a second predetermined value, and (ii) based on the determinations, output a first estimate of the channel. The frequency equalizer is configured to (i) receive a first signal including the packet, and (ii) equalize the first signal based on the first channel estimate.
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Citations
21 Claims
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1. A network device comprising:
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a receiver module configured to receive a packet wirelessly transmitted over a channel to the network device, wherein the packet comprises a signal field, and wherein the signal field (i) comprises a plurality of bits, or (ii) has a corresponding plurality of sub-carriers; a first channel estimate module configured to, (i) based on the signal field, perform a plurality of determinations, wherein each of the plurality of determinations indicates whether a respective one of the plurality of bits or a respective one of the plurality of sub-carriers has been modulated with a first predetermined value or a second predetermined value, and (ii) based on the plurality of determinations, output a first channel estimate of the channel; and a frequency equalizer configured to (i) receive a first signal comprising the packet, and (ii) equalize the first signal based on the first channel estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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receiving a packet wirelessly transmitted over a channel at a network device, wherein the packet comprises a signal field, and wherein the signal field (i) comprises a plurality of bits, and (ii) has a corresponding plurality of sub-carriers; based on the signal field, performing a plurality of determinations, wherein each of the plurality of determinations indicates whether a respective one of the plurality of bits or a respective one of the plurality of sub-carriers has been modulated with a first predetermined value or a second predetermined value, and (ii) based on the plurality of determinations, output a first channel estimate of the channel; receiving a first signal comprising the packet at a frequency equalizer; and equalizing, via the frequency equalizer, the first signal based on the first estimate of the channel. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification