Patent ID: 8311134
Filing Date: 2012-11-13
Classification: H04L

Abstract:
1. A method for transmitting scattered pilot signals in a multi-carrier system, comprising: (a) in each time slot, in time dimension, putting each four OFDM symbols into a group according to an order of the OFDM symbols; (b) in each group of OFDM symbols, in frequency dimension, selecting, for each OFDM symbol, a plurality of valid sub-carriers to transmit scattered pilots, wherein for a same OFDM symbol, between each two valid sub-carriers selected, there are seven valid sub-carriers; for different OFDM symbols in a same group, the valid sub-carriers selected are interleaving in frequency domain; and (c) transmitting scattered pilot signals on the valid sub-carriers selected; wherein if the bandwidth of the physical layer in the multi-carrier system is 8 MHz; step (b) comprises: (b1) determining the serial number n of an OFDM symbol for transmitting scattered pilot signals in a time slot; wherein m indicates the frequency domain serial number of the valid sub-carriers selected to transmit scattered pilots.