| abstract |
A method for use in channel coding for cellular communication in case of a transmitter using a plurality of antennas to convey respective low-rate data streams each of which is modulated by a plurality of spreading codes so as to provide a respective plurality of code channels—some of which are “reused” (i.e. used by more than one of the antennas)—and which in combination convey a single (high-rate) data stream including both systematic bits (i.e. information bits, as opposed to redundancy or parity bits added to protect the information bits), and also redundancy bits, the method including a step of allocating the systematic and redundancy bits to the plurality of code channels so as to take into account differences in the quality of the different physical channels by using a bit allocation rule that allocates more systematic bits to non-reused code channels than to reused code channels. |