In this article we analyze capacity improvement by directional antennas over omni antennas
in wireless sensor networks. The capacity in our analysis is the end-to-end per-node …

It is well known that IEEE 802.11 WLAN is highly inefficient for transporting voice data. For
example, if one simply takes the data rate of 802.11 b, 11 Mbps, and divide it by two times …

The increasing demand for gigabit-per-second speeds and higher wireless node density is
driving the need for spatial reuse and the utilization of higher frequencies above the legacy …

We propose a dynamic blind beamforming scheme which allows to benefit from antenna
directivity in large mobile ad hoc networks while avoiding heavy feedback to track mobile …

Cognitive radio systems allow secondary users to operate on underutilized licensed
spectrum. When considering highly congested communication channels, however …

针对载运平台间无线移动组网的传统天线的弊端, 给出了扇区天线方案. 在NS2
环境下简单仿真了该网络, 结果定性验证了扇区天线相对全向天线有性能改善 …

Cellular base stations are expensive to install as they require the operator to lease real
estate and establish back-haul connectivity to the public network. With increasing demand …

This paper presents a distributed protocol that supports power control and directional
spectrum reuse for TDMA-based MANET waveforms. This protocol was developed as an …

Multi-channel wireless networks are increasingly being employed as infrastructure networks
in metro areas. In addition, nodes in these networks employ directional antennas to improve …

We investigate the percolation connectivity of wireless ad hoc networks with directional
antennas (called DIR networks). One of major concerns is to derive bounds on the number …