W-CDMA transmission rate estimation method and device
AssigneeNEC Corporation
InventorTakeshi Sato
Life of this patent
Estimating the term…
Abstract
In a W-CDMA transmission rate estimation method, a maximum likelihood transport format combination is selected from a plurality of transport format combinations representing bit length combinations constituting a plurality of transport channels, each having a variable bit length, on the basis of correlation strengths between a normal encoded bit string and bit strings of data obtained by performing Viterbi decoding processing for data, of a reception output constituted by the respective transport channels, which corresponds to an arbitrary transport channel. A data transmission rate is then estimated on the basis of the selected combination. A W-CDMA transmission rate estimation device is also disclosed.
Claims7
A W-CDMA transmission rate estimation method comprising selecting a maximum likelihood transport format combination of a plurality of transport format combinations representing bit length combinations constituting a plurality of transport channels, each having a variable bit length, on the basis of correlation strengths between a normal encoded bit string and bit strings of data obtained by performing Viterbi decoding processing for data, of a reception output constituted by the respective transport channels, which corresponds to an arbitrary transport channel, and estimating a data transmission rate on the basis of the selected combination.
A W-CDMA transmission rate estimation device comprising transmission rate estimating means for performing Viterbi decoding processing for data, of a reception output constituted by a plurality of transport channels each having a variable bit length, which corresponds to an arbitrary transport channel, and selecting a maximum likelihood transport format combination of a plurality of transport format combinations representing bit length combinations constituting the respective transport channels, thereby estimating a data transmission rate.
A W-CDMA transmission rate estimation device for estimating a data transmission rate by performing Viterbi decoding processing for data, of a reception output constituted by a plurality of transport channels each having a variable bit length, which corresponds to an arbitrary transport channel, comprising:
- maximum path metric comparing means for comparing a plurality of path metric values obtained for the respective transport format combinations when the transport format combinations are used in the Viterbi decoding processing, thereby selecting a maximum path metric value;
- maximum path metric storage means for storing the maximum path metric value selected by said maximum path metric comparing means;
- and
- estimating means for comparing the maximum path metric values for the respective transport format combinations stored in said maximum path metric storage means, and selecting a maximum likelihood transport format combination, thereby estimating a data transmission rate.
Dependencies are inferred from the claim text.