| 摘要 |
A method of transmitting data, the method comprising: receiving a block of input data from a data source, the block comprising a plurality of digits of data; processing said block of input data to form a plurality of sub-blocks of data; distributing the plurality of sub-blocks of data to each of a corresponding plurality of channel coders to produce a plurality of channels of sub-block data; in each of the said channels: repeating each digit of sub-block data a plurality of times, spreading the repeated data by multiplying by a spreading code sequence, and modulating the data and introducing a phase angle; summing the data from each of the said channels to produce output data; and transmitting the output data.. The method is particularly applicable, but by no means limited, to Code Division Multiple Access (CDMA) systems. Also provided are methods of receiving data, and transmitter and receiver apparatus. |
