Cross-Layer Optimization for MIMO-Based Wireless Ad Hoc Networks: Routing, Power Allocation, and Bandwidth Allocation

2008 ◽  
Vol 26 (6) ◽  
pp. 913-926 ◽  
Author(s):  
Jia Liu ◽  
Y.T. Hou ◽  
Yi Shi ◽  
H. Sherali
Keyword(s):  
Ad Hoc Networks ◽  
Power Allocation ◽  
Wireless Ad Hoc Networks ◽  
Bandwidth Allocation ◽  
Ad Hoc ◽  
Cross Layer ◽  
Cross Layer Optimization ◽  
Hoc Networks

scholarly journals Multi-Objective Cross-Layer Optimization for Selection of Cooperative Path Pairs in Multihop Wireless Ad hoc Networks

2013 ◽  
Vol 9 (3) ◽  
pp. 170 ◽  
Author(s):  
Nyoman Gunantara ◽  
Gamantyo Hendrantoro
Keyword(s):  
Power Consumption ◽  
Ad Hoc Networks ◽  
Wireless Ad Hoc Networks ◽  
Ad Hoc ◽  
Cross Layer ◽  
Multihop Wireless ◽  
Cross Layer Optimization ◽  
Hoc Networks ◽  
Pareto Method ◽  
Selection Of

This paper focuses in the selection of an optimal path pair for cooperative diversity based on cross-layer optimization in multihop wireless ad hoc networks. Cross-layer performance indicators, including power consumption, signal-to-noise ratio, and load variance are optimized using multi-objective optimization (MOO) with Pareto method. Consequently, optimization can be performed simultaneously to obtain a compromise among three resources over all possible path pairs. The Pareto method is further compared to the scalarization method in achieving fairness to each resource. We examine the statistics of power consumption, SNR, and load variance for both methods through simulations. In addition, the complexity of the optimization of both methods is evaluated based on the required computing time.

Power Allocation in Cognitive Radio in Energy Constrained Wireless Ad Hoc Networks

2013 ◽  
pp. 248-270
Author(s):  
Tamaghna Acharya ◽  
Santi P. Maity
Keyword(s):  
Wireless Networks ◽  
Ad Hoc Networks ◽  
Power Allocation ◽  
Wireless Ad Hoc Networks ◽  
Network Lifetime ◽  
Ad Hoc ◽  
Energy Aware ◽  
Radio Frequency Spectrum ◽  
Research Problems ◽  
Hoc Networks

The acute scarcity of radio frequency spectrum has inspired to think of a new communication technology where the devices are expected to be able to sense and adapt to their spectral environment, thereby appearing as cognitive radios (CR) who can share opportunistically the bands assigned to primary users (PUs). At the same time, low cost, increased coverage, enhanced capacity, infrastructure-less configuration, and so forth, become the essence of future wireless networks. Although the two research fields came up independently, in due time it is observed that CR has a promising future and has excellent applications in wireless networks. To this aim, this chapter explores some scope of integration in CR and ad hoc networks (called here CRAHNETs) in some specific design perspective. First, a brief literature review on CR power allocation and energy aware routing in wireless ad hoc networks (WANETs) is done that highlights the importance for the scope of their integration. Then, power allocation in CRAHNETs with extended network lifetime is considered as an example problem. More specifically, the design problem is: given a set of paths (routes) between a pair of source (S) and destination (D) nodes in CRAHNETs, how to allocate optimal power to the source and relay nodes such that outage probability for data transmission is minimized and network lifetime is enhanced, while meeting the limits of total transmit power of CRs and interference threshold to PU simultaneously. A solution for the stated problem is proposed along with performance evaluation. A few related research problems are mentioned as future research directions.

Cross-Layered Secure and QoS Aware Design of VOIP over Wireless Ad-Hoc Networks

2013 ◽  
Vol 9 (4) ◽  
pp. 23-45 ◽  
Author(s):  
Shahin Vakilinia ◽  
Mohammadhossein Alvandi ◽  
Mohammadreza Khalili Shoja ◽  
Iman Vakilinia
Keyword(s):  
Ad Hoc Networks ◽  
Wireless Ad Hoc Networks ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Denial Of Service ◽  
Cross Layer ◽  
Wireless Ad Hoc Network ◽  
Cross Layer Design ◽  
Hoc Networks

In this paper, Cross-layer design has been used to provide quality of service (QoS) and security at the same time for VOIP over the wireless ad-hoc network. In this paper the authors extend their previous work (i.e. Multi-path Multi-Channel Protocol Design for Secure QoS-Aware VOIP in Wireless Ad-Hoc Networks) by adding transport and application layers considerations. The goal of this paper is to support QoS and security of VOIP simultaneously. Simulation results shows that the proposed cross-layered protocol stack design significantly improve QoS parameters of the VOIP calls under the jamming or Denial-of-service attacks.

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