S Mehrabanzad, S Ananthaiyer, PA Humblet - US Patent 7,801,487, 2010 - Google Patents
BACKGROUND Cellular wireless communications systems are designed to serve many access terminals distributed in a large geographic area by dividing the area into cells. At the …
GC Li, JZ Zhu - US Patent App. 11/561,317, 2008 - Google Patents
BACKGROUND 0002 The development and popularity of wireless elec tronic communication in recent years has dramatically increased resulting in wireless local area …
JSC Chen, BE Schein - US Patent 7,366,223, 2008 - Google Patents
The present invention applies to the field of wireless communications systems and, in particular, to modifying hopping sequences used for communications channels. 10 2 …
BACKGROUND Wireless communications systems generally use multiple frequencies to provide greater bandwidth than would be pos sible using a single frequency. Such systems …
Q Li, XE Lin - US Patent 7,522,555, 2009 - Google Patents
BACKGROUND In a wireless communication system, wireless communi cation devices may transmit and/or receive radio frequency (RF) signals through one or more antennas. Some …
U Lemberger, J Myszne, G Basson - US Patent 7,433,383, 2008 - Google Patents
BACKGROUND In a wireless communication system, wireless communi cation devices may transmit and/or receive information using radio frequency (RF) signals. Since RF spectrum …
N Himayat, S Sandhu - US Patent 8,060,033, 2011 - Google Patents
BACKGROUND Some wireless systems may use multiple antennas, such as a multiple- input, multiple-output (MIMO) system. MIMO systems may use multiple antennas at both the …
K Sood, J Walker - US Patent 7,624,271, 2009 - Google Patents
BACKGROUND Communications nodes in a wireless network typically communicate using radio frequency signals, although other forms of electromagnetic radiation may be utilized as …
CC Tsien - US Patent 7,155,230, 2006 - Google Patents
BACKGROUND Wireless local area network (LAN) equipment operating in a 5 GHZ band may have dynamic frequency selection (DFS) capability based on European Radio …