Ahmed Mohammed Mikaeil

Shanghai Jiao Tong University | SJTU ·  Department of Electronic Engineering

Multi-wavelengths passive optical networks (PONs) such as wavelength division multiplexing (WDM) and time wavelength division multiplexing (TWDM) PONs are outstanding solutions for providing a sufficient bandwidth for mobile front-haul to support C-RAN architecture in 5G mobile network. In this paper a joint allocation framework for multi-wavelengt...

Cloud radio access network (C-RAN) is a key technology for the new-generation mobile network (5G). Multi-wavelength passive optical networks (PONs) such as wavelength division multiplexing (WDM) and time wavelength division multiplexing (TWDM) PONs are outstanding solutions for providing a sufficient bandwidth to support mobile fronthaul in C-RAN-b...

Bandwidth-efficient 5G optical fronthaul interfaces like the Ethernet-based common public radio interface (eCPRI) with novel low layer split (LLS) are being actively investigated. Regarding the uplink eCPRI, the burdened wireless resource blocks (RBs) are delivered and traffic aggregation is leveraged, therefore the eCPRI traffic is highly dynamic...

Cloud radio access network and the subsequent next-generation fronthaul interface are the key solutions for the upcoming 5G deployment. In both architectures, the baseband units (BBUs) are centralized, and remote radio units (RRUs) are separately allocated, where the BBUs and RRUs are connected through a fronthaul network with common public radio i...

In this paper, we propose a novel method for low-latency 10-Gigabit-capable symmetric passive optical network (XGS-PON) mobile front-haul for small cell cloud radio access network (C-RAN) based on traffic estimation. In this method, the number of packets that arrive to the optical network unit (ONU) buffer from the remote radio unit (RRU) link is p...

Next-generation Ethernet passive optical networks (NG-EPON) allow optical network unit (ONU) transmission scheduling concurrently on multiple wavelengths. This increases the network capacity up to 100 Gb/s and increases flexibility, as four wavelengths are used with an individual capacity of 25 Gb/s. However, an optimum dynamic bandwidth allocation...

Time division multiplexing passive optical networks (TDM-PONs) technologies are viewed as an attractive solution for flexible and cost-effective mobile front-haul for dense deployment of small cells in cloud radio access network (C-RAN) architecture. Due to the high latency of upstream transmission in TDM-PON because of using a dynamic bandwidth al...

Abstract – Predicting the near future of primary user (PU) channel state availability (i.e., spectrum occupancy) is quite important in cognitive radio networks in order to avoid interfering its transmission by a cognitive spectrum user (i.e., secondary user (SU)). This paper introduces a new simple method for predicting PU channel state based on en...

Recently, the IEEE 802.3ca Task Force has been working to standardize the next-generation Ethernet passive optical network (NG-EPON) to fulfill future bandwidth demands. NG-EPON allows an optical network unit (ONU) transmission to be scheduled on multiple wavelength channels simultaneously. This will increase network capacity up to 100 Gb/s, along...

Time division multiplexing passive optical network (TDM-PON) technologies are viewed as an attractive solution for flexible and cost-efficient mobile front-haul for cloud radio access network (C-RAN) architecture. However, it is a challenge for TDM-PONs to meet the strict latency requirement of mobile front-haul in C-RAN because they use a dynamic...

Spectrum sensing use the current primary user (PU) received signal to detect PU channel state at the current time, however predicting PU channel state in the near future using previous detected channel state information can secure an efficient utilization of the unoccupied spectrum, also can help in preventing the harmful interference with the PU a...

The most important challenge of the spectrum sensing is to find a way to share the licensed spectrum without interfering with the licensed users transmission. Therefore, predicting the licensed or primary users (PU) channel occupancy status has been investigated extensively in recent years, this study introduce a novel approach for predicting the P...

Predicting the licensed or primary user (PU) channel state future has been widely investigated in the recent literature, this study introduce a new approach for predicting PU channel state based on time series and hidden Markov model (HMM). In this new approach we model the primary user channel state detection sequence, which can be represented by;...

The most important challenge of the spectrum sensing in cognitive radio (CR) is to find a way to share the licensed spectrum without interfering with the licensed user transmission. Predicting the near future of the licensed or primary user (PU) channel state can solve this problem. Many studies have investigated the primary user channel state pred...

Cooperative spectrum sensing has been shown to be an effective method to improve the detection performance of the licensed user availability by exploiting spatial diversity. However, cooperation among cognitive radio (CR) users may also introduce a variety of overheads due to the extra sensing time, delay, energy, and operations that limit achievab...