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In this paper, we propose a new forwarding scheme for a multi-hop CDMA wireless sensor network (WSN). Selection of intermediate nodes considers detection probability along with maximum forwarding distance by taking into account the wireless channel condition, like path loss, and shadowing. Energy and latency performance using infinite ARQ between source and final destination of proposed scheme is...
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...
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...
In this paper, outage performance of a frequency planned cognitive radio network has been studied. We consider dynamic spectrum sharing with spectrum underlay approach. Both secondary and primary users will access the same spectrum but primary user will be oblivious to the presence of cognitive user. Secondary users can change their radio parameters adaptively on demand. We consider correlation amongst...
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 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...
This paper investigates outage performance of different power allocation strategies for code division multiple access (CDMA) system. We proposed a simulation method for single-site power allocation algorithm, site selection diversity transmission (SSDT), and multi-site power allocation algorithms viz., link proportional power allocation (LPPA), equal power allocation (EPA). We have compared these...
Effects of soft handoff (HO) on forward link performance of packet data service have been presented in this paper. Outage of packet data transmission using code division multiple access (CDMA) is evaluated. Throughput and delay have also been investigated in cellular CDMA in presence of soft HO. Influence of physical layer issues like soft HO parameters, shadowing correlation, power control error...
This paper analyzes an adaptive processing gain based data transmission in cellular CDMA where processing gain is allocated depending on traffic intensity based on a constraint on bit error rate. Truncated automatic repeat request (T-ARQ) is used at link layer to satisfy a prescribed delay constraint. Effects of correlation among signal and interferers are included in the study. The impact of processing...
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