Reception quality measuring apparatus and reception quality measuring method
AssigneeNEC Corporation
InventorsShintaro Eda, Kengo Oketani
Life of this patent
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Abstract
A reception quality measuring apparatus (100) including: an equalizing processing unit (1) for performing an equalizing process on a reception signal to derive an equalized reception signal; lattice distance estimating element (2) for deriving a lattice distance estimation value using the equalized reception signal; an RSSI estimating unit (3) for deriving an RSSI estimation value using the lattice distance estimation value; an ISSI estimating unit (4) for deriving an ISSI estimation value by subtracting the RSSI estimation value from the lattice distance estimation value; and a dividing unit (5) for deriving an SIR representing reception quality by dividing the RSSI estimation value by the ISSI estimation value.
Claims10
A reception quality measuring apparatus comprising:
- equalizing processing unit that performs an equalizing process on a reception signal to derive an equalized reception signal;
- lattice distance estimating unit that derives a lattice distance estimation value using only real components of the equalized reception signal;
- RSSI estimating unit that derives an RSSI estimation value using the lattice distance estimation value;
- ISSI estimating unit that derives an ISSI estimation value by subtracting the RSSI estimation value from the lattice distance estimation value;
- and
- dividing unit that derives an SIR representing reception quality by dividing the RSSI estimation value by the ISSI estimation value.
A reception quality measuring method comprising:
- performing an equalizing process on a reception signal to derive an equalized reception signal;
- deriving a lattice distance estimation value using only real components of the equalized reception signal;
- deriving an RSSI estimation value using the lattice distance estimation value;
- deriving an ISSI estimation value by subtracting the RSSI estimation value from the lattice distance estimation value;
- and
- deriving an SIR representing reception quality by dividing the RSSI estimation value by the ISSI estimation value.
Dependencies are inferred from the claim text.