Abstract: A wireless communication system implements Forward Error Correction (“FEC”) and Interpolated Tree Orthogonal Multiplexing (“ITOM”). ITOM is a compact spectral waveform variant that uses a dyadic tree structure. The tree structure facilitates a flexible mapping of the transmit waveform to the available spectrum bandwidth on a non-contiguous and multiresolution basis. The system includes a receiver that implements a maximum likelihood (“ML”) synchronization scheme, which is pulse shape independent and non-data aided.

Abstract: A wireless communication network that implements Circular Simplex Turbo Block Coded Modulation (“CSTBCM”) Forward Error Correction (“FEC”), randomization and Wavelet Packet Modulation (“WPM”) is provided. The network includes a transmitter that uses an adaptive tree structure. The tree structure is pruned to avoid known signal impediments by first determining the best uniform level and then tuning in the forward direction and in the reverse direction. The network also includes a receiver that implements a maximum likelihood decision directed (“MLDD”) synchronization scheme. The synchronization scheme is pulse shape independent and non-data aided.

Abstract: Method for selecting a route within a wireless ad-hoc routing protocol using a QoS metric. The method begins by dynamically defining a routing zone that encompasses at least two of the network nodes. A communications link is established between the source node and a destination node. If the destination node is within the routing zone of the source node, the route is determined by a proactive routing protocol. If, however, the destination node is outside the routing zone, the route is determined using a reactive routing protocol. A QoS metric for each route is calculated by combining the individual QoS metrics for each hop within the particular route. Finally, the route with the best QoS metric is selected to use as the communications link between the source node and the destination node.

Abstract: A protocol-independent error-control system includes several components (840a, 830a, 820a, 150b, 820b, 830b, 840b) that assist in providing more reliable data transmission between endpoints (110, 120): 1) an ATM adaptation layer that supports quality-critical and time-critical data; 2) a rate converter that uses a priority scheme to adjust the data rate for different types of data; and 3) an error-control subsystem that implements a data link protocol optimized for error-prone links, and capable of recognizing traffic from many kinds of network sources. The error-control subsystem may be used alone or in combination with the ATM adaptation layer (170, 172, 180, 182) and/or the rate converter (830).

Abstract: A new system for allowing PCS Providers to share cell sites, and more particularly multi-sector antennas, is provided. The present invention utilizes primarily passive, linear components to combine the transmit signals of PCS Providers which reside in non-adjacent frequency bands over a multi-sector antenna and to distribute from a multi-sector antenna the receive signals in all frequency bands of the PCS Providers.