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AssigneePanasonic Intellectual Property Corporation of America
InventorsTomofumi Takata, Daichi Imamura, Seigo Nakao, Sadaki Futagi, Takashi Iwai, Yoshihiko Ogawa
Estimating the term…
It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, W2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot.
A communication apparatus comprising:
A transmission method comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Based on quality criteria: using the level of interference
Feedback content: channel quality parameters, e.g. channel quality indicator [CQI]
Code division multiplex systems: code application, i.e. aspects relating to how codes are applied to form multiplexed channels
ZCZ [zero correlation zone]: cAZAC [constant-amplitude and zero auto-correlation]
About 3 years 8 months of term left · ends 29 Jun 2030 (estimated)
1. Technical Field
The present invention relates to a radio communication terminal apparatus and a radio transmission method.
2. Description of the Related Art
FIG. 1 is a drawing showing a band reserved for uplink control signal transmission;
FIG. 2 is a drawing conceptually showing a state in which terminals transmit CQIs using a band reserved by the system;
FIG. 3 is a drawing showing the characteristic of ZAC sequences used to CQI primary spread;
Now, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, with embodiments, components with the same functions will be assigned the same reference numerals and overlapping descriptions will be omitted.
The configuration of terminal apparatus 100 according to embodiment 1 of the present invention will be explained with reference to FIG. 8. In FIG. 8, control information generating section 101 generates CQI signals based on downlink SIR (Signal to Interference Ratio) and so forth and outputs them to coding section 102. Coding section 102 encodes the control information outputted from control information generating section 101 and outputs the encoded control information to modulating section 103. Modulating section 103 modulates the coded control information outputted from coding section 102 and outputs the result to spreading section 105.
ZAC sequence generating section 104 generates ZAC sequences and outputs them to spreading section 105. Spreading section 105 spreads the control information outputted from modulating section 103 using ZAC sequences outputted from ZAC sequence generating section 104 and outputs the results to mapping section 106.