Samsung Electronics Co., Ltd.

Yonsei University

Goo-Hyun Park

Sung-Kwon Jo

Jong-Hyeuk Lee

Eung-sun Kim

Dae-Sik Hong

Ye-Hoon Lee

Myeon-Gyun Cho

A base station is capable of performing a method for velocity estimation in a mobile communication system. In the velocity estimation method, a received signal is delayed by a plurality of different sample intervals. A candidate maximum Doppler frequency for each of the delayed received signals is estimated. A maximum Doppler frequency in a reliable period is selected among the candidate maximum Doppler frequencies.

Apparatus and method for velocity estimation in mobile communication system

Disclosed is a method for estimating the velocity of a mobile station in Rician fading environments in which a direct wave exists. Cellular mobile communication environments include two environments, Rician fading environments in which a direct wave exists and Rayleigh fading environments in which a direct wave does not exist. Generally, many methods for estimating the velocity of a mobile station have been known in Rayleigh fading environments. However, in Rician fading environments in which a direct wave exists, many errors occurs in estimating the velocity of a mobile station due to difficulty in estimation of a Rician coefficient K and an incident angle &#x3b8;. According to the invention, a method is provided wherein error is mostly eliminated in estimating the velocity of a mobile station by obtaining a maximum Doppler frequency of the mobile station, even without directly obtaining a Rician coefficient K and an incident angle &#x3b8;.

Velocity estimation apparatus in mobile communication environments

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Seoul, South Korea

Goo-Hyun Park