Abstract: Briefly, in accordance with one embodiment of the invention, an ad-hoc network comprises nodes. A sub-set of the nodes provides a backbone for communication between nodes in the ad-hoc network. At least some of the nodes in the backbone are selected to be a router based at least in part on a metric of the node.

Abstract: Training symbol formats are provided for use in a MIMO based wireless communication system that uses adaptive power loading. In at least one embodiment, a training symbol format is used that is capable of enhancing training symbol signal to noise ratio (SNR).

Abstract: A power amplification system includes functionality for measuring and compensating for distortion and non-linearity in a power amplifier (PA). The compensation process may be performed repeatedly (or continuously) during the operational life of the PA to adapt to changing gain characteristics of the PA.

Abstract: Handshaking protocols, techniques, and structures are presented for use in implementing closed loop MIMO using explicit feedback in a wireless network.

Abstract: An RF receiver front end includes a variable gain low noise amplifier and/or a variable gain mixer to provide gain variability in the receiver. This gain variability may be used during, for example, automatic gain control operations. In at least one embodiment, the variable gain LNA is a broadband device that is capable of supporting multiple wireless standards.

Abstract: Channels are selected for nodes in a wireless mesh network in a mananer that enhances connectivity and throughput in the network. For a node in the network, channel configurations are first identified that satisfy a predetermined connectivity constraint with respect to neighbor nodes of the node. A channel configuration is then selected from the identified configurations based on an achievable throughput of the configuration.

Abstract: An encoded input bit stream is interleaved across a number of symbols having different bit sizes in a manner that ensures that the bits assigned to each symbol from the bit stream are separated by a minimum separation. In this manner, bits that are adjacent within the bit stream do not get assigned to the same symbol.

Abstract: A reconfigurable decoder is capable of performing both Viterbi decoding and turbo decoding. The reconfigurable decoder may be repeatedly reconfigured to work with any of a number of different convolutional or turbo coding schemes. In at least one embodiment, the reconfigurable decoder is capable of automatically reconfiguring itself based on a present signal environment about a communication device carrying the decoder.

Abstract: Power saving strategies are presented for use in communication systems, networks, and devices. In at least one embodiment, a power saving probe request is sent from a first entity to a second entity to request information on available power saving capabilities of the second entity. The first entity may then receive a power saving probe response from the second entity that includes information on available power saving capabilities of the second entity. The first entity may then negotiate with the second entity for provision of at least one power saving service chosen from the available power saving capabilities. In another embodiment, a first entity may send power saving probe requests to a number of second entities to request information on available power saving capabilities of the second entities. The first entity may then receive power saving probe responses from the second entities that each include information on available power saving capabilities of a corresponding second entity.

Abstract: Techniques and structures are presented for use in mitigating the effects of platform noise within a wireless device.

Abstract: All-to-all communication is carried out in a wireless mesh network using a relaying packet that is routed through the network. In at least one embodiment, the relaying packet includes aggregated information that is made available to all nodes in the mesh network.

Abstract: On-die coupled inductor structures are disclosed that are capable of reducing the occurrence of charge crowding within the structure.

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: Techniques and structures are disclosed for providing service related information to wireless users within a wireless network.

Abstract: In a high throughput wireless network, data is permitted to be transmitted in a reverse direction during a frame exchange (i.e., from a responder to an initiator). In at least one embodiment, channel training is performed in the reverse direction only if it is determined that a performance benefit may result.

Abstract: Nodes of an ad-hoc network may determine a category assigned to neighbor nodes and may select a communication pattern for communicating with the neighbor nodes based on their assigned categories. The category may be associated with a node's role in the network.

Abstract: Enhanced throughput is achieved by using full concatenation of SDUs, SDU fragments, and STATUS PDUs within the protocol data units of a UMTS-based system.

Abstract: Techniques and structures are provided to allow a wireless data device to operate within a wireless personal area network without the use of a centralized coordination function.

Abstract: An adaptation technique is selected for use in a wireless network based on estimated throughput. In at least one embodiment, throughput is estimated for a wireless channel for both prefix adaptation and postfix adaptation. An adaptation technique is then selected based on the estimates. In some embodiments, an adaptation validity duration is determined to gauge the potential effectiveness of adaptation information associated with a wireless channel.

Abstract: Transmit parameters are adjusted for a wireless device based on link margin. In at least one embodiment, link margin is calculated as a difference between a received power level and receiver sensitivity.