RECEIVER APPARATUS, RECEPTION METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
First Claim
1. A receiver apparatus that includes a channel estimator to perform channel estimation,the channel estimator comprising:
- an interim channel impulse estimating unit that calculates an interim channel impulse response estimation value,a path extracting unit that extracts a path location for use in calculation of a channel impulse response estimation value from among paths forming the interim channel impulse response estimation values,a channel impulse response estimating unit that calculates the channel impulse response estimation value using the path location extracted by the path extracting unit, anda frequency response estimating unit that converts the channel impulse response estimation value into a frequency response estimation value by time-frequency transforming the channel impulse response estimation value.
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Abstract
A receiver apparatus includes a channel estimator (b106) to perform channel estimation. The channel estimator includes an interim channel impulse estimating unit (b106-1) that calculates an interim channel impulse response estimation value, a path extracting unit (b106-3) that extracts a path for use in calculation of a channel impulse response estimation value from among paths forming the interim channel impulse response estimation values, a channel impulse response estimating unit (b106-4) that calculates the channel impulse response estimation value using the path extracted by the path extracting unit, and a frequency response estimating unit (b106-5) that converts the channel impulse response estimation value into a frequency response estimation value by time-frequency transforming the channel impulse response estimation value. In this way, a receiver apparatus capable of performing accurate channel estimation results.
25 Citations
11 Claims
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1. A receiver apparatus that includes a channel estimator to perform channel estimation,
the channel estimator comprising: -
an interim channel impulse estimating unit that calculates an interim channel impulse response estimation value, a path extracting unit that extracts a path location for use in calculation of a channel impulse response estimation value from among paths forming the interim channel impulse response estimation values, a channel impulse response estimating unit that calculates the channel impulse response estimation value using the path location extracted by the path extracting unit, and a frequency response estimating unit that converts the channel impulse response estimation value into a frequency response estimation value by time-frequency transforming the channel impulse response estimation value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A reception method including a channel estimation process to calculate a channel impulse response estimation value by performing channel estimation,
the channel estimation process comprising: -
an interim channel response estimating operation to calculate an interim channel impulse response estimation value, a path extracting operation to extract a path location for use in calculation of a channel impulse response estimation value from among paths forming the interim channel impulse response estimation values, a channel impulse response estimating operation to calculate the channel impulse response estimation value using the path location extracted in the path extracting operation, and a frequency response estimating operation to convert the channel impulse response estimation value into a frequency response estimation value by time-to-frequency transforming the channel impulse response estimation value. - View Dependent Claims (11)
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Specification