Feedback signaling error detection and checking in MIMO wireless communication systems

摘要

A method of feedback in a wireless transmit receive unit includes providing a precoding matrix index (PMI), error checking the (PMI) to produce an error check (EC) bit, coding the PMI and the EC bit and transmitting the coded PMI and EC bit.

主权项

1. A method implemented in a wireless transmit receive unit (WTRU), the method comprising:
the WTRU generating feedback bits, wherein the feedback bits comprise one or more of a precoding matrix index (PMI) or a channel quality index (CQI); the WTRU selecting a number of cyclic redundancy check (CRC) bits to attach to the feedback bits based on the number of feedback bits to be encoded; the WTRU selecting a type of channel coding scheme to apply to the feedback bits and the selected number of CRC bits based on the number of feedback bits to be encoded; the WTRU encoding the feedback bits and the selected number of CRC bits using the selected type of channel coding scheme; and the WTRU transmitting the encoded feedback bits.