发明名称 |
Receiver apparatus, method for processing received signal and computer program product |
摘要 |
A reception apparatus includes: a Fourier transform unit to output a converted signal; a propagation path estimation unit to calculate propagation-path-estimated-values based on pilot subcarriers; and a propagation path compensation unit, including a filter, to compensate propagation path distortion, the filter includes: first multipliers to multiply the propagation-path-estimated-values of taps other than a center tap by filtering coefficients; a first adder to add outputs of the first multipliers; a first subtractor to calculate an error between an output of the first adder and a propagation-path-estimated-value of the center tap; a filtering coefficient generation unit to generate the filtering coefficients based on the error; a second multiplier to multiply the propagation-path-estimated-value of the center tap by first coefficient; a third multiplier to multiply the output of the first adder by second coefficient; and a second adder to add an output of the second multiplier and an output of the third multiplier. |
申请公布号 |
US8897354(B2) |
申请公布日期 |
2014.11.25 |
申请号 |
US201314055212 |
申请日期 |
2013.10.16 |
申请人 |
Fujitsu Limited |
发明人 |
Umeda Masataka |
分类号 |
H03H7/30;H04B1/10;H04L25/03;H04L25/02 |
主分类号 |
H03H7/30 |
代理机构 |
Arent Fox LLP |
代理人 |
Arent Fox LLP |
主权项 |
1. A receiver apparatus comprising:
a Fourier transform unit configured to output a converted signal obtained by converting a received signal from a time domain into a frequency domain; a propagation path estimation unit configured to calculate a plurality of propagation path estimated values based on pilot subcarriers included in the converted signal; and a propagation path compensation unit, including a filter that filters the plurality of propagation path estimated values, configured to compensate propagation path distortion in the converted signal, wherein the filter includes: a plurality of first multipliers configured to multiply the plurality of propagation path estimated values corresponding to a plurality of taps other than a center tap, respectively, by a plurality of filtering coefficients; a first adder configured to add output values of the plurality of first multipliers; a first subtractor configured to calculate an error between an output value of the first adder and a propagation path estimated value corresponding to the center tap; a filtering coefficient generation unit configured to generate the filtering coefficients based on the error; a second multiplier configured to multiply the propagation path estimated value corresponding to the center tap by a first coefficient; a third multiplier configured to multiply the output value of the first adder by a second coefficient; and a second adder configured to add an output value of the second multiplier and an output value of the third multiplier. |
地址 |
Kawasaki JP |