Method and system for processing reference signals in OFDM systems using transmission time interval groupings

S Zhao, H Lou, NB Mehta, J Zhang - US Patent 7,912,115, 2011 - Google Patents
A method and system processes reference signals (115) for an uplink channel (103)
between a transmitter, such as user equipment, and a receiver such as a base station, in a …

Channel estimator for OFDM system

R Stirling-Gallacher, Z Wang, T Dölle - US Patent 7,689,242, 2010 - Google Patents
The present invention relates to a device for receiving signals in a wireless cellular OFDM
system, in which data symbols are transmitted in frequency subcarriers and timeslots. The …

Radio communication base station apparatus and transmission method in the radio communication base station apparatus

A Nishio - US Patent App. 12/298,477, 2009 - Google Patents
0002 Recently, in mobile communication, various infor mation Such as images and data
other than speech are trans mission targets. Accompanying this, demands for more reli able …

Cell search method, mobile station, and base station

Y Kishiyama, K Higuchi, M Sawahashi - US Patent 8,331,347, 2012 - Google Patents
US8331347B2 - Cell search method, mobile station, and base station - Google Patents
US8331347B2 - Cell search method, mobile station, and base station - Google Patents Cell …

Method for frame and frequency synchronization of an OFDM signal and method for transmitting an OFDM signal

W Schaefer, C Hansen - US Patent 7,339,882, 2008 - Google Patents
(57) ABSTRACT A method for frame and frequency synchronization of an OFDM signal and
a signal for transmitting an OFDM signal is described, the purpose of which is to impress a …

Apparatus and method for assigning subchannels in an OFDMA communication system

IS Hwang, SY Yoon, SH Sung, J Cho, H Huh - US Patent 7,545,772, 2009 - Google Patents
(57) ABSTRACT A wireless communication system that divides an entire fre quency band
into a plurality of Subcarrier bands and includes a plurality of subchannels, each of which …

Dynamic sub-carrier assignment in OFDM systems

BM Hashem, DG Steer, SS Periyalwar - US Patent 6,721,569, 2004 - Google Patents
A method and apparatus are provided for selecting and signaling the identity of sub-carriers
to be used for transmission of data in a radio communication system, and for using other sub …

Method and apparatus for transmitting and receiving a signal in a wireless communication system that supports plural component carriers

YH Kwon, SY Kim, SH Moon, JH Chung… - US Patent …, 2016 - Google Patents
The present invention relates to a method for receiving a terminal signal in a wireless
communication system that supports plural component carriers, the method comprising …

Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system

SH Sung, JH Jeong, YS Park, SY Yoon… - US Patent …, 2009 - Google Patents
Disclosed are an apparatus and a method for generating a preamble signal for cell
identification in an OFDM mobile communication system. The method includes the steps of …

Channel estimation apparatus and method for OFDM/OFDMA receiver

MC Park, YS Park, BG Song… - US Patent App. 10/971,491, 2005 - Google Patents
(57) ABSTRACT A channel estimation apparatus and method for an OFDM/OFDAM receiver.
A channel characteristic value, positioned prior to a pilot Symbol of a current slot, from …