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Energy conservation is one of the most important issues in wireless ad hoc and sensor networks, where nodes are likely to rely on limited battery power. This paper analyzes the performance of a CDMA WSN, in terms of lifetime of the network, where nodes are placed in a random fashion. A routing protocol is proposed and simulated where selection of intermediate nodes is governed by a parameter which...
Power conservation is one of the most important issues in wireless ad hoc and sensor networks, where nodes are likely to rely on limited battery power. Bit error rate (BER) is the key performance indicator of an efficient network system. This paper evaluates the performance of a static CDMA wireless sensor network (WSN) in terms of BER, where the positions of nodes are more likely to be random. Data...
Energy efficient reliable communication over unpredictable wireless medium is a major challenge for resource constrained wireless sensor network. The paper quantitatively evaluates the energy level performance of CDMA wireless sensor networks (WSN) using BCH code based hybrid ARQ-type II and compares it with ARQ for successful transmission of a fixed length packet. The effects of several network parameters...
In this paper, we analyze the performance of a single hop CDMA based wireless sensor network (WSN) using receiving antenna diversity at sink in terms of outage probability and bit error rate (BER). Correlation amongst signal and interferers is considered in large scale fading environment. We assume each node is power controlled while antenna diversity is present only at the sink. Energy consumption...
Sensing range is an important measure of the performance in Wireless Sensor Networks (WSNs). The sensing range which is determined by detection probability depends on the nature of the propagation path, transmit power etc. The detection probability degrades with decreafixed transmit power scheme detection probabilityse in node spatial density and increase in level of shadowing. In fixed transmit power...
This paper evaluates energy level performance of error control strategies in Wireless Sensor Networks (WSNs). More precisely Forward Error Correcting (FEC) and Automatic Repeat Request (ARQ) technique are studied for a square grid WSN. ARQ scheme is compared with FEC scheme in terms of Packet Error Rate (PER), energy efficiency and total energy spent to communicate packetized data. The impact of node...
This paper considers the problem of fusing decisions in a distributed detection system when the local binary decisions made at the sensors, relative to observations of a common binary phenomenon, are transmitted over Rayleigh faded channel subject to additive noise. We use a training-based channel estimator at the fusion center (FC) to estimate the complex Gaussian fading coefficients characterizing...
Energy Conservation is one of the most vital aspects in Wireless Sensor Networks (WSNs) for better network durability since nodes have limited resources. Excessive high transmit power consumes more energy and increases internode interference significantly. While, low transmit power may cause network failure. Thus choice of optimal transmit power is one of the prime concern in such network. Optimal...
This paper evaluates energy level performance of three packet delivery schemes in a Wireless Sensor Networks (WSN) in multipath Rician fading channel. Three different information delivery mechanisms are investigated using regenerative relays with or without error correction capability. Energy consumption for successful delivery of a data packet for each mechanism is evaluated and compared under several...
This paper evaluates the end-to-end performance of a CDMA based static multi-hop wireless sensor network (WSN) in shadowed environment with correlated interferers. Two different information delivery mechanisms are studied using regenerative relays with or without error correction capability. Optimal packet sizes, based on energy efficiency, are estimated for both schemes under several network conditions...
This paper evaluates the end-to-end outage probability of a CDMA based static multi-hop wireless sensor network (WSN) in shadowed environment. An interference model for multi-hop is presented considering correlation amongst interferers. Three different information delivery mechanisms are studied using regenerative relays with or without error correction capability. Outage probability for each mechanism...
The paper evaluates the performance of a CDMA based static wireless sensor network (WSN) in terms of bit error rate (BER), considering correlation amongst signal and interferers in large scale fading environment. We assume each node is power controlled while antenna diversity is present only at the sink. The effects of node density, and number of antennas used for spatial diversity on BER is investigated...
This paper evaluates energy level performance of three packet delivery schemes in a Wireless Sensor Networks (WSN) in presence of Rayleigh fading. Three different information delivery mechanisms are investigated using regenerative relays with or without error correction capability. Energy consumption for successful delivery of a data packet for each mechanism is evaluated and compared under several...
This paper evaluates the optimal packet size for successful transmission of data packets in a CDMA based wireless sensor networks with layered architecture. Energy efficiency is chosen as an optimization metric. Correlation amongst signal and two kinds of interferers (Multiple Access Interference and Node Interference) in shadowed environment has been considered. An appropriate energy model is considered...
This paper evaluates the end-to-end performance of a CDMA based static multi-hop wireless sensor network (WSN) in shadowed environment. An interference model for multi-hop is presented using correlated interferers. Three different information delivery mechanisms are studied using regenerative relays with or without error correction capability. Energy requirement for successful delivery of a data packet...
The paper evaluates the performance of a CDMA based wireless sensor networks (WSN) with layered architecture in terms of energy consumption for successful transmission of data packets, considering only correlation among interferers in shadowed environment. We consider a model of interference at the sink for a layered architecture of CDMA based WSN with two kinds of interference, multiple access interference...
The paper evaluates the performance of a CDMA based wireless sensor networks (WSN) with layered architecture in terms of bit error rate (BER) and energy consumption for successful transmission of data packets. Correlation amongst signal and interferers in shadowed environment has been considered. Two kinds of interference namely multiple access interference (MAI) and node interference (NI) are considered...
The energy constraint in wireless sensor networks (WSNs) advocates the design and use of low power components in sensor nodes. Commercial general purpose microcontrollers are not suitable for such applications and have motivated us towards the design of a low-power microcontroller tailored for the WSN application domain. In this paper, we study the characteristics of typical WSN applications and present...
The paper evaluates the performance of a CDMA based wireless sensor networks (WSN) in terms of outage probability and BER, considering correlation among interferers in shadowed environment. An appropriate model for the interference power, outage and BER are presented for a single hop communication. Detection probability is also evaluated in shadowed environment. The effects of node density, minimum...
The paper evaluates the performance of a CDMA based wireless sensor networks (WSN) in terms of packet error rate (PER) and energy consumption, considering correlation among interferers in shadowed environment. An appropriate model for the interference power, PER and average number of retransmission for successful delivery in a single hop communication are presented. An energy model is considered for...
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