Samsung Electronics Co., Ltd.

Beam-hak Lee

Gerald Edward Sobelman

Eui-seok Kim

Man-Ho Kim

Sang-woo Rhim

Dae-wook Kim

A method of modulating data, which is represented by two data types of 'high' and 'low', and demodulating the modulated data, is disclosed. In a method of data modulation and demodulation for a communication system which has a transmitting end modulating a data and a receiving end demodulating the transmitted data from the transmitting end, the data is represented by two types including &#x2018;high&#x2019; and &#x2018;low&#x2019;, and the receiving end receives at least one data which consists of at least one code-word spread by a unique orthogonal code. The receiving end adds up the received data in the unit of code-word, and subtracts the length of the orthogonal code from a value which is obtained by doubling the sum of the code-word, when the code-word of the orthogonal code is &#x2018;0&#x2019;. The receiving end then averages the result after the subtraction in the unit of orthogonal code length and extracts the result, and therefore, obtains the data from the transmitting end.

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Seoul, South Korea

Beam-hak Lee