Transmitting apparatus of communication system

Details Transmitting apparatus of communication system Transmitting apparatus of communication system

2005-10-21

2008-12-02

Le, Thanh C (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

C375S144000, C375S260000

Reexamination Certificate

active

07460833

ABSTRACT:
A transmitting apparatus according to the present invention includes a prefilter for compensating a previously measured estimated impulse response of a communication system by assuming a communication system in which the transmitting apparatus and the receiving apparatus are directly connected. The prefilter included in the transmitting apparatus compensates an original characteristic of a communication system. Accordingly, the prefilter enables an accurate channel measurement of a receiving apparatus without any increase of calculation.

REFERENCES:
patent: 6131013 (2000-10-01), Bergstrom et al.
patent: 6331996 (2001-12-01), Lin et al.
Bourdoux A et al, “Non-reciprocal transceivers in OFDM/SDMA systems: Impact and Mitigation,” Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Aug. 10-13, 2003, Piscataway, NJ, USA, IEEE, pp. 183-186.
Charles S et al, “Channel sounder for 5.5 GHz wireless channels,” IEE Proceedings: Communications, Institution of Electrical Engineers, GB, vol. 150, No. 4, Jul. 15, 2003, pp. 253-258.
‘Digital signal processing techniques applied to mobile radio channel sounding’ Fannin et al., IEE Proceedings-F, vol. 138, No. 5, Oct. 1991, pp. 502-508.
‘Deconvolution Noise in DS-Radio Channel Sounding and a Polynomial Compensation Method’ Korhonen et al., Helsinki University of Technology, Communications Laboratory, Finland, IEEE 1997, pp. 806-810.

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