Each of a general chunk to which pilot signals are allocated at a general density, and a high-
density chunk to which pilot signals are allocated at a higher density than the density of the …

A method for channel response estimation over a fast fading channel and signal estimation
using a coded pilot is disclosed. A coded orthogonal frequency division modulated (OFDM) …

A data transmitting and receiving method of transmitting supplementary data in an OFDM
communication system is disclosed. The method of transmitting and receiving the OFDM …

An apparatus and method for generating a preamble and searching a cell using the
generated preamble in an orthogonal frequency division multiple access (OFDMA) system …

The present invention relates to an apparatus and method for searching for a cell of a mobile
communication system, and more particularly, to an apparatus and method for search ing for …

Provided is a method of generating a pilot pattern capable of perform adaptive channel
estimation, and a method and appa ratus of a base station and a method and apparatus of a …

(57) ABSTRACT A method for receiving resources allocated from a base sta tion by a
terminal in an OFDMA mobile communication system. The method includes receiving, for a …

In an OFDMA-based cellular system, a frame of a downlink signal includes a common slot
and traffic slots. The common slot includes a synchronization preamble and a cell search …

The wireless transmission apparatus generates one or a plurality of Orthogonal Frequency
Division Multiplexing (OFDM) symbols for channel estimation, each OFDM symbol including …

A method of transmitting and receiving preamble sequences in a transmitter in an OFDM
communication system is provided. A transmitter segments a first sequence of a …