S Chari, R Krishnomoorthy - US Patent 7,324,794, 2008 - Google Patents
Embodiments of methods of receiving transmitted signals are disclosed. The methods include a first antenna receiving a second signal, a second antenna receiving a second …
RB Dybdal - US Patent 10,056,675, 2018 - Google Patents
Abstract Systems and methods are provided for repositioning a directional antenna that responds to a desired signal and directional interference. The antenna can generate a sum …
R Narasimhan - US Patent 7,016,651, 2006 - Google Patents
Techniques for measuring Signal quality in a communica tions link supporting OFDM symbol transfer across plural Sub-carriers are disclosed. These techniques employ a link interface …
AA Maltsev, AE Rubtsov, AM Soupikov - US Patent 7,457,366, 2008 - Google Patents
An OFDM receiver applies phase compensation to subcarriers of data symbols of an OFDM packet. A phase compensation estimate is generated from pilot subcarriers within the data …
AA Maltsev, AV Pudeyev, AM Soupikov… - US Patent …, 2008 - Google Patents
Orthogonal frequency division multiplexing (OFDM) is a multi-carrier transmission technique that uses orthogonal 30 Subcarriers to transmit information within an available spec trum …
AK Gupta - US Patent 7,203,261, 2007 - Google Patents
Techniques are provided for tracking residual frequency error and phase noise in an OFDM system. At a receiver, each received OFDM symbol is transformed with an FFT to obtain …
H Fujii, H Suda - US Patent 7,415,085, 2008 - Google Patents
An OFDM receiver receives an OFDM signal transmitted from an OFDM transmitter by using a sub-carrier. The OFDM receiver includes a channel estimator configured to obtain a …
M Zhang, S Kim, Y Kim - 2012 18th Asia-Pacific Conference on …, 2012 - ieeexplore.ieee.org
In this paper, we present a very simple soft demapping algorithm for M-ary PSK and QAM schemes and their universal implementation for adaptive modulation systems. The proposed …
L Kennedy, P Runkle, B Guenther - US Patent App. 10/435,047, 2004 - Google Patents
Adaptive methods and systems for applying a channel correction factor to received signals to correct errors caused by channel distortion. The channel correction factor is dynamically …