Abstract: Embodiments of the present invention provide a method for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion.

Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: Subcarrier phase rotation is implemented in an OFDM transmitting apparatus to overcome problems such as, for example, non-frequency selective multipath fading. In at least one embodiment, subcarrier phase rotation is practiced in an OFDM system implementing multiple input multiple output (MIMO) techniques.

Abstract: Embodiments of the present invention provide a method, apparatus and system for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion.

Abstract: An apparatus and associated methods to aid in system identification in a heterogeneous communication environment is generally described herein.

Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: Embodiments of an antenna system for notebook, laptop and portable computers and methods for communicating in multiple wireless systems are generally described herein. Other embodiments may be described and claimed. In some embodiments, a notebook computer comprises a plurality of transceivers, a plurality of antennas coupled to the transceivers with coaxial cables, and signal separation circuitry coupled to at least one of the coaxial cables to allow the at least one coaxial cable to be shared by two or more of the transceivers.

Abstract: A method and a wireless communication device to overcome a hidden node problem in a BSS The method includes detecting that transmitting one or more data frames causing one or more nodes of an unsynchronized wireless communication network to become hidden nodes. The wireless communication device that causes the hidden node problem requests a time allocation for transmitting one or more data frames to at least one node of the unsynchronized wireless communication network and to transmit the one or more data frames using an antenna beam forming technique at the allocated time frame.

Abstract: Embodiments of an apparatus and methods, for monitoring an environment using a wireless network and sending a signal if movement is detected, are generally described herein. Other embodiments may be described and claimed.

Abstract: Embodiments of the present invention provide a method, apparatus and system of processing received wireless signals. The apparatus, according to some demonstrative embodiments of the invention, may include a network interface configured to convert the received wireless signals into output signals to be provided to a host processor, the network interface having a first mode of operation, in which the output signals have base-band values corresponding to base-band values of the received signals, and a second mode of operation, in which the output signals have values representing a data frame of the received signals. Other embodiments are described and claimed.

Abstract: An apparatus and associated methods to aid in system identification in a heterogeneous communication environment is generally described herein.

Abstract: An apparatus and associated methods to aid in system identification in a heterogeneous communication environment is generally described herein.

Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: Briefly, an apparatus and method that may adaptively select a coding mode of an OFDM sub-carrier symbol of a data stream according to a received channel state information related to the OFDM sub-carrier.

Abstract: Subcarrier phase rotation is implemented in an OFDM transmitting apparatus to overcome problems such as, for example, non-frequency selective multipath fading. In at least one embodiment, subcarrier phase rotation is practiced in an OFDM system implementing multiple input multiple output (MIMO) techniques.

Abstract: Apparatus for correcting distortion on an optical transmission link carrying a multiplicity of optical transmission channels, the apparatus comprising: an adjustable optical equalizer, through which a plurality of said channels pass; a field sampler that samples signals passing through said equalizer, such that a plurality of channels passing through the adjustable equalizer are separately sampled; and a controller that receives the samples, determines control parameters for the equalizer therefrom and adjusts the equalizer, responsive to said determined control parameters.

Abstract: Embodiments of the present invention provide a method, apparatus and system for selectively modulating a data frame of a signal using either a frequency-multiplexing modulation method or a spatial-multiplexing modulation method based on a predetermined criterion.

Abstract: Methods and systems for increasing the potential capacity of point to point communication between two sites within line of sight of each other are disclosed. Two antennas at each of the two sites are configured geometrically to approximately provide a desired value for a function of signal electrical phase differences so as to allow differentiation of transmitted signal. Capacity is thereby increased compared to a system with one antenna at each site.

Abstract: Methods and systems for increasing the potential capacity of point to point communication between two sites within line of sight of each other are disclosed. Two antennas at each of the two sites are configured geometrically to approximately provide a desired value for a function of signal electrical phase differences so as to allow differentiation of transmitted signals. Capacity is thereby increased compared to a system with one antenna at each site.