发明名称 |
Communication apparatus and reception method |
摘要 |
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. |
申请公布号 |
US8750090(B2) |
申请公布日期 |
2014.06.10 |
申请号 |
US201313752126 |
申请日期 |
2013.01.28 |
申请人 |
Panasonic Corporation |
发明人 |
Takata Tomofumi;Imamura Daichi;Nakao Seigo;Futagi Sadaki;Iwai Takashi;Ogawa Yoshihiko |
分类号 |
H04J11/00 |
主分类号 |
H04J11/00 |
代理机构 |
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代理人 |
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主权项 |
1. A communication apparatus comprising:
a receiver configured to receive a signal including a reference signal; and an estimator configured to estimate a channel estimation value using the reference signal in accordance with a switching signal, wherein the switching signal switches between a first correspondence relationship and a second correspondence relationship, each defining a relationship regarding a cyclic shift used for the reference signal, the first correspondence relationship defines an orthogonal relationship between a first coefficient corresponding to a first number for specifying the cyclic shift and a second coefficient corresponding to a second number having a determined difference from the first number for specifying the cyclic shift, and the second correspondence relationship defines a non-orthogonal relationship between the first coefficient corresponding to a third number for specifying the cyclic shift and the second coefficient corresponding to a fourth number having said determined difference from the third number for specifying the cyclic shift.
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地址 |
Osaka JP |