1. Field of the Invention
The present invention generally relates to the technical field of wireless communications, and particularly relates to a wireless communications apparatus and method for use in a wireless communications system for performing frequency scheduling.
2. Description of the Related Art
Error-correction coding and interleaving techniques are often performed in order to increase the reliability of wireless transmission in this type of technical field. The error-correction coding corrects an error based on a correct bit near an erroneously received bit, so that the error-correction capability could decrease when a series of a large number of bits are erroneously received (when a burst error occurs). The interleaving rearranges a bit sequence to be transmitted at both the transmitter and receiver according to some known pattern so as to transmit the bit sequence, with the transmitted bit sequence being rearranged at the receiver so as to reconstruct data. In this way, even when the burst error occurs, the error-correction capability no lower than a certain level may be expected. Such techniques as described above are performed in existing wireless communications systems. HSDPA is disclosed in Non-patent document 1.
Non-patent document 1
3GPP, TR25.848