Transmitting apparatus of communication system
AssigneeElectronics and Telecommunications Research Institute
InventorsHong-Sup Lee, Hyun-Kyu Chung, Kwang-Chun Lee
Life of this patent
Estimating the term…
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.
Claims5
A transmitting apparatus of a communication system for enabling a receiving apparatus to measure a radio channel, comprising:
- a code generator for diffusing a signal to be transmitted by a pseudo-noise (PN) code;
- a modulator for modulating the diffused signal;
- a pulse shaper for pulse-shaping the modulated signal;
- an analogue filtering and amplifying unit for filtering and amplifying the pulse-shaped signal;
- and
- a prefilter for prefiltering the filtered and amplified signal, and compensating a previously measured estimated impulse response of the communication system by assuming a communication system in which the transmitting apparatus and the receiving apparatus are directly connected.
A transmitting apparatus of a communication system for enabling a receiving apparatus to measure a radio channel accurately, comprising:
- a pseudo-noise (PN) code generator for prefiltering and diffusing a signal to be transmitted by the PN code in which a compensated value of an impulse response of the communication system is stored after assuming a communication system in which the transmitting apparatus and the receiving apparatus are directly connected;
- a modulator for modulating the prefiltered and diffused signal;
- a pulse shaper for pulse-shaping the modulated signal;
- and
- an analogue filtering and amplifying unit for filtering and amplifying the pulse-shaped signal and transmitting the signal to the receiving apparatus.
Dependencies are inferred from the claim text.