Wireless metropolitan grid promises to offer various broadband services to citizens anywhere with low cost. The problem of throughput and scalability are still critical challenges for the success. In this paper, we propose and evaluate scalable backbone architecture which employs super nodes with asymmetric capability to reduce the hop count as well as increase the scalability. Multi-channel mu...

Multi-radio multi-channel (MRMC) wireless mesh networks (WMNs) achieve higher throughput using multiple simultaneous transmissions and receptions. However, due to limited number of non-overlapping channels, such networks suffer from co-channel interference, which degrades their performance. To mitigate co-channel interference, effective channel assignment algorithms (CAAs) are desired. In this ...

Multi-rate CDMA is a potentially attractive multiple access method for future broad-band multimedia wireless networks that must support integrated voice/data traffic. The primary impairment for such multi-rate systems is the multipath nature of radio channels that results in intra-user inter-chip interference (ICI) and multi-user interference (MUI) between different users’ symbols. Explicit kno...

The Wuhan Ionospheric Oblique Backscattering Sounding System with the addition of an antenna array (WIOBSS-AA) is the newest member of the WIOBSS family. It is a multi-channel radio system using phased-array antenna technology. The transmitting part of this radio system applies an array composed of five log-periodic antennas to form five beams that span an area to the northwest of the radar sit...

mmMAGIC (Millimetre-Wave Based Mobile Radio Access Network for Fifth Generation Integrated Communications) is an EU funded 5G-PPP project, whose overall objective is to design and pre-develop a mobile radio access technology (RAT) operating in the 6-100 GHz range, capable of impacting standards and other relevant fora. The focus of the project is on extreme Mobile Broadband, which is expected t...

Multi-Channel Access has the potential to solve the throughput and scalability issues that mar the performance of 802.11 mesh and adhoc networks. It allows multiple simultaneous transmissions in a radio neighborhood thereby increasing network throughput and scalability. In spite of this potential, it is limited to simulation studies and its implementation on hardware is rare. In this demo, we d...

Software defined radio (SDR) is emerging as a powerful platform for future generation cellular systems, due to its capability to operate conforming to multiple mobile radio standards. Channelizer in an SDR operates at the highest sampling rate and hence a low complexity design is needed for the most computationally intensive part of the SDR receiver. The channel filters in the channelizer extra...

This paper focuses on the analysis of the per-node throughput capacity of a many-to-one ring-based Multi-Channel Multi-Radio interface (MCMR) Wireless Mesh Networks (WMN). We firstly introduce the ring-based network model and obtain the minimum number of mesh nodes which guarantees the network connectivity. Interference constraint and destination bottleneck constraint are shown as two key facto...

In this paper, we investigate the system performance of a multi-cell multi-user (MU) hybrid millimeter wave (mmWave) multiple-input multiple-output (MIMO) network adopting the channel estimation algorithm proposed in [1] for channel estimation. Due to the reuse of orthogonal pilot symbols among different cells, the channel estimation is expected to be affected by pilot contamination, which is c...