Samsung Electronics Co., Ltd.

Jong-Gun Moon

Sang-Won Choi

Jong-Yoon Hwang

Seung-Hwan Won

Myung-Joon Shim

A multi-path search apparatus and a method in a wireless communication system are provided. The multi-path search apparatus includes a correlator configured to get a 1st correlation value between a received signal and a 1st code, and to get a 2nd correlation value between the received signal and a 2nd code, a coupler configured to couple the 1st correlation value and the 2nd correlation value, and a multi-path information generator configured to get the correlation energy of the output of the coupler and to generate multi-path information.

Multi-path search apparatus and method in a wireless communication system

A method of acquiring initial synchronization in a code division multiple access mobile communication system is provided. The method includes quantizing a received signal into a plurality of levels, calculating correlation values of the quantized received signal and a local code, calculating absolute values of the correlation values, and detecting a position of a maximum value which exceeds a threshold among the absolute values and an ID of a downlink synchronization (SYNC-DL) sequence and determining timing values of available cells and energy values corresponding to the timing values.

Method and apparatus for acquiring synchronization in code division multiple access system

A method and an apparatus for acquiring downlink frame synchronization are provided. The method includes phase-rotating a mid-amble of a first Time Slot (TS) of a received sub-frame within an area and estimating a Channel Impulse Response (CIR), calculating a Maximum Likelihood (ML) between a downlink synchronization code of the received sub-frame and a downlink synchronization code generated in a terminal by using the estimated CIR, correlating downlink synchronization codes of a plurality of sub-frames and the downlink synchronization code generated and calculating ML values of the plurality of sub-frames with respect to the plurality of sub-frames corresponding to M Transmission Time Intervals (TTIs), and calculating hypothesis values of hypotheses according to a frequency interval and a phase offset of the generated downlink synchronization code based on the calculated ML values of the plurality of sub-frames and drawing a frequency offset and a hypothesis corresponding to a maximum value.

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Suwon-si, South Korea

Jong-Gun Moon