Methods and apparatus for channel interleaving in OFDM systems

摘要

A method and apparatus for channel interleaving in a wireless communication system. In one aspect of the present invention, the data resource elements are assigned to multiple code blocks, and the numbers of data resource elements assigned to each code block are substantially equal. In another aspect of the present invention, a time-domain-multiplexing-first (TDM-first) approach and a frequency-domain-multiplexing-first (FDM-first) approach are proposed. In the TDM-first approach, at least one of a plurality of code blocks are assigned with a number of consecutive data carrying OFDM symbols. In the FDM-first approach, at least one of the plurality of code blocks are assigned with all of the data carrying OFDM symbols. Either one of the TDM first approach and the FDM-first approach may be selected in dependence upon the number of the code blocks, or the transport block size, or the data rate.

主权项

1. A method for resource element allocation by a transmitter in a wireless communication system, the method comprising:
segmenting information bits to be transmitted into a plurality of code blocks; encoding the information bits in each code block; assigning a number of resource elements to each code block, the number of assigned resource elements determined based on N, Nseg and whether a spatial transmit diversity scheme is applied, where N is a total number of resource elements available for data transmission and Nseg is a number of the code blocks; and transmitting a signal derived from an output of the encoding to a receiver via one or more antennas based on the assigned resources elements.