Samsung Electronics Co., Ltd.

Joon-sang Ryu

Sang-hyun Lee

Dong-woo Kim

Jong-han Kim

Jung-In Kim

Yong-Won Shin

Tae-Kyun Jung

Kwon-yeol Park

Won-Cheol Kim

A wireless communication with modulation and demodulation set based on channel information is disclosed. An operating method of a first wireless communication device includes: transmitting a pilot signal via a wireless channel to a second wireless communication device; receiving channel state information, estimated by and transmitted from the second wireless communication device in response to the pilot signal, the channel state information including amplitude information and phase information of a wireless channel; setting a modulation method for data transmission based on the amplitude information and the phase information of the wireless channel; generating modulated data based on the modulation method; and transmitting the modulated data via the wireless channel.

Wireless communication with modulation and demodulation set based on channel information

A method and apparatus for suppressing vocoder noise are provided. In the method, first information and second information are received from a channel decoder, the first information indicating whether a decoded data frame has an error and the second information being a channel quality metric, error concealment voice decoding is performed on the decoded data frame if the first information indicates that no channel decoding error has been generated and the second information is smaller than a predetermined first threshold, and normal voice decoding is performed on the decoded data frame if the first information indicates that no channel decoding error has been generated and the second information is equal to or larger than the first threshold.

Method and apparatus of suppressing vocoder noise

A method and apparatus of suppressing a vocoder noise are provided. The method includes receiving from a channel decoder a vocoder frame and first information, the first information indicating whether the vocoder frame has an error, generating speech data by performing voice decoding on the vocoder frame, determining whether a tonal noise has been detected in the speech data, if the first information indicates that the vocoder frame has an error, and attenuating the volume of the speech data and outputting the volume-attenuated speech data through a speaker, upon detection of the tonal noise in the speech data.

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Suwon-si, South Korea

Joon-sang Ryu