Channel estimation method based on reference signal in LTE-A system in TM9 mode
A technology of LTE-A and channel estimation, applied in the field of channel estimation, which can solve the problems of prolonged estimation and high computational complexity, etc.
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[0026] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention.
[0027] figure 1 is a 3GPP LTE-A downlink system model diagram, such as figure 1As shown, at the sending end, the input bits first enter the channel coding module, and then the coded bits are scrambled and then modulated into complex modulation symbols. These complex modulation symbols are mapped to the transmission layer of one or more antenna ports, and each layer After precoding, it is mapped to the resource elements of each antenna port, and the reference signal is inserted at the same time. Finally, these symbols (including data symbols and reference signals) of each antenna port are modulated into complex time-domain OFDM signals, and transmitted in the wireless multiple transmission in the channel. At the receiving end, under ideal synchronization, the signal Y at the ...
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