FIELD: radio engineering, communication.
SUBSTANCE: disclosed is a user device configured to transmit a demodulating pilot channel to a base station. The user device performs code multiplexing through an orthogonal code sequence for a demodulating pilot channel and performs further code multiplexing by multiplying each symbol, which forms the demodulating pilot channel, by a multiplier which is a code.
EFFECT: high accuracy of channel estimation in an uplink for users at a cell boundary.
2 cl, 8 dwg
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