Abstract: A method of transmitting two packets to two different nodes may include encoding a first packet according to a first channel to obtain an encoded first packet and encoding a second packet according to a second channel different than the first channel to obtain an encoded second packet. The encoded first packet and the encoded second packet may be combined to obtain a combined encoded packet. The method may include mapping the combined encoded packet to symbols for transmission. The symbols may be transmitted to the two different nodes over the first channel and the second channel.

Abstract: Various embodiments are described for a trained data transmission for communication systems.

Abstract: In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels. Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.

Abstract: Embodiments herein may operate at a cooperating relay station (CRS) in a wireless packet-carrying network (WPCN). A source-to-CRS (SC) link quality of an SC wireless channel may be estimated using signal quality information derived from a packet transmitted by a source station and received by the CRS. A CRS-to-destination (CD) link quality of a CD wireless channel may also be estimated using signal quality information derived from a packet transmitted by a destination station and received by the CRS. A source-to-destination (SD) link quality parameter representing SD link quality may be extracted by the CRS from the packet transmitted by the destination station. The CRS may decide whether to participate with the source station or with another CRS in transmitting an SD packet based upon the SC link quality, the CD link quality, the SD link quality, or a combination thereof. Other embodiments may be described and claimed.

Abstract: Various embodiments are described for a trained data transmission for communication systems.

Abstract: Methods, protocols and systems for communicating in a multi-hop wireless mesh network may use cooperative diversity transmission techniques in combination with mesh routing. In one example, a cooperation layer may be integrated with MAC and/or PHY layers and generate a plurality of virtual interfaces for use by a mesh routing layer. The plurality of virtual interfaces may include a first interface type defining potential mesh nodes that can be reached without using cooperative diversity transmission techniques, a second interface type defining potential mesh nodes that can be reached by cooperatively transmitting with one neighbor node, and a third interface type defining potential mesh nodes that can be reached by cooperatively transmitting with combinations of two or more neighbor nodes. The mesh routing layer may select which interface to use in determining multi-hop routing based on a range and/or cost metric of a particular virtual interface.

Abstract: Methods, protocols and systems for communicating in a multi-hop wireless mesh network may include explicitly providing information relating to backhaul wireless link qualities in multi-hop wireless mesh network to next generation subscriber stations in a first mode. In a second mode, embodiments are configured to implicitly provide indicia of multi-hop wireless link qualities to legacy subscriber stations by adjusting a transmit power of frames sent to the legacy subscriber stations. Other embodiments and variations are described in the detailed description.

Abstract: In a wireless device having multiple receive antennas, wireless medium sensing operations are performed using a reduced number of receive antennas. Receive chains associated with unused receive antennas are deactivated to reduce power consumption within the device.

Abstract: The present invention provides a diversity transmission system. The diversity transmission system includes a method and system of diversity transmission through a wireless channel formed between multiple transmission antennae of a transceiver and a subscriber unit. The method includes forming a stream of symbols from an incoming data stream. A plurality of the symbols are selected forming a data vector. A maximum delay spread through the wireless channel is determined. The maximum delay spread is generally determined as a multiple of a sample time spacing between elements of the data vector. A plurality of diversity vectors are generated based upon the data vector and the maximum delay spread, each diversity vector includes a plurality of elements. Corresponding elements of the diversity vectors are simultaneously transmitted, each diversity vector transmitted from at least one corresponding antenna of a plurality of spatially separate antennae.

Abstract: Multiple wireless user devices act cooperatively to communicate with a remote destination node through a MIMO channel. In at least one embodiment, a cooperative cluster of user devices is formed that makes use of vertical coding techniques to achieve enhanced communication performance.

Abstract: A multicarrier receiver includes spatial channel decouplers to separate signal components that are separately transmitted with more than one transmit antenna or over more than one spatial channel.

Abstract: A cooperative communications manager module establishes a first wireless link with a client device using a first channel frequency and dispatches a first message to the client device over the first channel frequency. The cooperative communications manager module establishes a second wireless link with a destination node and controls the cooperative transmission of the first message simultaneously with the client device to the destination node over the second wireless link using a second channel frequency. Other embodiments are described and claimed.

Abstract: An embodiment of the present invention provides an apparatus, comprising a node capable of cooperating in a distributed communication wireless network and wherein the cooperation is based upon predetermined fairness criteria. In an embodiment of the present invention the predetermined fairness criteria may include algorithms that account for battery life and quality of service (QoS). The wireless network may be a centralized network or de-centralized network.

Abstract: Embodiments of methods and apparatus for providing an integrated multi-hop routing and cooperative diversity system are generally described herein. Other embodiments may be described and claimed.

Abstract: Partial channel information is used to weight signals being transmitted by cooperating nodes within a cooperative diversity arrangement. In at least one embodiment, the phase of the complex conjugate of a channel coefficient between a cooperating node and a remote device is used to weight a transmit signal.

Abstract: Methods and devices for wireless networks for extending the communications range of an originating device without increasing its transmit power or bandwidth. An originating device may include signaling in a physical (PHY) layer packet such that peer network devices may know to retransmit the received packet substantially in synchronization with one another. The subsequent and substantially simultaneous transmission of the original signal by peer network devices may effectively increase the range of the originating device so a transmission may reach its destination. Various embodiments and implementations are also disclosed.

Abstract: An interleaver and scheme for interleaving in which highly correlated bits are maximally separated. The scheme involves interleaving a set of bits to be delivered to a modulation system that utilizes a quantity of N carrier frequencies. A first block of N consecutive bits is assigned to each of N bins, on a one-bit-per-one-bin basis. The aforementioned assignment proceeds in a particular sequence. A second block of N consecutive bits is assigned to each of the N bins, on a one-bit-per-one-bin basis. The second block is assigned in the same sequence the first block was assigned. The second block is consecutive to the first block.

Abstract: A system, apparatus, method and article to manage diversity for a wireless multicarrier communication system are described. An apparatus may include a diversity agent to couple to a transmitter, the diversity agent to convert a determined number of input bits into symbols, interleave the symbols across multiple spatial streams, and map the symbols to tones for each spatial stream. Other embodiments are described and claimed.

Abstract: In a multicarrier transmitter that transmits two or more spatial data streams, a bit distributor assigns encoded bits to the spatial data streams based on bit-loading capabilities of the streams and in a manner to intermix the bits among the spatial streams.

Abstract: In a multiple-input multiple-output (MIMO) multicarrier communication system, a mobile station sends a quantized time-domain representation of the channel transfer function to a base station for use by the base station in generating beamforming coefficients for use in subsequent transmissions to the mobile station. In some embodiments, the quantized time-domain representation of the channel transfer function may be generated from selected most significant rays of an initial estimated sampled channel impulse response. Other embodiments may be described and claimed.