Mobile termile capable of efficiently measuring CNIR and...

Details Mobile termile capable of efficiently measuring CNIR and... Mobile termile capable of efficiently measuring CNIR and...

2005-09-22

2008-09-02

Kincaid, Lester (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

C370S480000

Reexamination Certificate

active

07420957

ABSTRACT:
The present invention relates to a mobile terminal for efficiently measuring a carrier to noise and interference ratio (CNIR) in an orthogonal frequency division multiplexing (OFDM) mobile communication system and a CNIR method thereof. The mobile terminal includes a frequency offset and frame detector for detecting frame timing information and frequency offset from a received signal, a demodulator for demodulating the received signal by using the detected frame timing information and frequency offset, a subchannel separator for separating a data symbol from symbols outputted by the demodulator, a channel estimating and equalizing unit for estimating and equalizing a channel for the corresponding subchannel from the data symbol, and a CNIR measuring unit for transmitting a measured current CNIR to the base station.

REFERENCES:
patent: 6690747 (2004-02-01), Petrus et al.
patent: 2003/0002471 (2003-01-01), Crawford et al.
patent: 2005/0245278 (2005-11-01), Vannithamby et al.
patent: WO 03/085845 (2003-10-01), None
Vehicular Technology Conference, 2000, IEEE VTS—Fall VTC 2000, pp. 434-438.
“CNIR Measurements in OFDM-Based Systems” by Young-Hoon Kim, et al.; CIC 2004, The 9th CDMA International Conference, Oct. 25-28, 2004.
Vehicular Technology Conference, 2000, IEEE VTS—Fall VTC 2000, pp. 434-138 “Accurate Noise Estimates in Multicarrier Systems” by Carols H Aldana et al.

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