Mobile unit, mobile communication system, and antenna verification method

Abstract

A mobile unit wherein the error rate of phase determination in an antenna verification can be reduced so as to improve the reception performance. During selecting, from two predetermined candidate phase differences, a phase difference having a higher possibility, based on correlation values obtained between a received signal from a first antenna of BTS and each of signals obtained by phase-rotating a received signal from a second antenna of BTS by the two respective predetermined candidate phase differences, a weighting part (16) of a mobile unit weights the correlation values such that the candidate phase difference having the higher possibility can be easily selected based on the information of the phase difference between the first and second antennas that is notified of by BTS.

Description

technical field [0001] The present invention relates to a mobile device, a mobile communication system and an antenna verification method, and more particularly, to an antenna verification method in a transmit diversity scheme. Background technique [0002] Antenna verification in a conventional mobile communication system to which a closed-loop mode transmit diversity scheme is applied will be described (for example, refer to Non-Patent Document 1). [0003] figure 1 It is a diagram showing the structure of a BTS (Base Transceiver Station, Base Transceiver Station) in a conventional mobile communication system. exist figure 1 DPCH (Dedicated Physical Channel, Dedicated Physical Channel) unit 1 takes a DPCCH (Dedicated Physical Control Channel, Dedicated Physical Control Channel) and a DPDCH (Dedicated Physical Data Channel, Dedicated Physical Data Channel) as input and outputs a DPCH. The DPCH is spread by spreading unit 2 and then divided into two branches and input to ...

AI Technical Summary

Problems solved by technology

[0014] As mentioned above, when the phase information transmitted by the mobile device may not be correctly received by the BTS due to the influence of noise, the noise also has a similar effect on the mobile device and thus errors may occur in the determination

It should be noted that although the BTS has been notified of the phase information of the antenna Ant2, the phase information is calculated by multiplying the weight coefficient w2 generated depending on the feedback information (phase difference information between the antennas Ant1 and Ant2) from the mobile device to the mobile device. was changed, but the mobile device did not use the notified phase information when determining the phase

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