Energy efficient wavelet based OFDM for V-BLAST MIMO Wireless Sensor Networks

Rafique, Zimran; Seet, Boon‐Chong

doi:10.1109/greencom.2011.6082500

Cited by 4 publications

(2 citation statements)

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“…To make the system more energy efficient without any information loss, the use of WOFDM with V-BLAST based WSN was proposed in [15] and evaluated under a co-located true MIMO receiver architecture. In [16], the BER performance of such systems was also observed using different V-BLAST detection algorithms.…”

Section: Related Workmentioning

confidence: 99%

Performance Analysis of Cooperative Virtual MIMO Systems for Wireless Sensor Networks

Rafique

Seet

Al-Anbuky

2013

Sensors

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Multi-Input Multi-Output (MIMO) techniques can be used to increase the data rate for a given bit error rate (BER) and transmission power. Due to the small form factor, energy and processing constraints of wireless sensor nodes, a cooperative Virtual MIMO as opposed to True MIMO system architecture is considered more feasible for wireless sensor network (WSN) applications. Virtual MIMO with Vertical-Bell Labs Layered Space-Time (V-BLAST) multiplexing architecture has been recently established to enhance WSN performance. In this paper, we further investigate the impact of different modulation techniques, and analyze for the first time, the performance of a cooperative Virtual MIMO system based on V-BLAST architecture with multi-carrier modulation techniques. Through analytical models and simulations using real hardware and environment settings, both communication and processing energy consumptions, BER, spectral efficiency, and total time delay of multiple cooperative nodes each with single antenna are evaluated. The results show that cooperative Virtual-MIMO with Binary Phase Shift Keying-Wavelet based Orthogonal Frequency Division Multiplexing (BPSK-WOFDM) modulation is a promising solution for future high data-rate and energy-efficient WSNs.

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Section: Related Workmentioning

confidence: 99%

Performance Analysis of Cooperative Virtual MIMO Systems for Wireless Sensor Networks

Rafique

Seet

Al-Anbuky

2013

Sensors

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“…In these designs, a sensor node can be comprised of a two-element switched antenna array using a single radio frequency front-end. Based on these results, unlike the previous works, where MIMO has been considered for WSNs only in the cooperative virtual MIMO manner, non-cooperative MIMO techniques have been proposed [ 20 – 22 ]. In [ 21 ], and a space-time coded cooperative transmission has been proposed.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Multi-Node Multiple Input and Multiple Output (MIMO) Transmission for Mobile Wireless Multimedia Sensor Networks

Cho

Choi

You

2013

Sensors

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Mobile wireless multimedia sensor networks (WMSNs), which consist of mobile sink or sensor nodes and use rich sensing information, require much faster and more reliable wireless links than static wireless sensor networks (WSNs). This paper proposes an adaptive multi-node (MN) multiple input and multiple output (MIMO) transmission to improve the transmission reliability and capacity of mobile sink nodes when they experience spatial correlation. Unlike conventional single-node (SN) MIMO transmission, the proposed scheme considers the use of transmission antennas from more than two sensor nodes. To find an optimal antenna set and a MIMO transmission scheme, a MN MIMO channel model is introduced first, followed by derivation of closed-form ergodic capacity expressions with different MIMO transmission schemes, such as space-time transmit diversity coding and spatial multiplexing. The capacity varies according to the antenna correlation and the path gain from multiple sensor nodes. Based on these statistical results, we propose an adaptive MIMO mode and antenna set switching algorithm that maximizes the ergodic capacity of mobile sink nodes. The ergodic capacity of the proposed scheme is compared with conventional SN MIMO schemes, where the gain increases as the antenna correlation and path gain ratio increase.

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Energy-Efficient MIMO–OFDM Systems

Rafique

Seet

2013

Handbook of Green Information and Communication Systems

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Energy efficient wavelet based OFDM for V-BLAST MIMO Wireless Sensor Networks

Cited by 4 publications

References 10 publications

Performance Analysis of Cooperative Virtual MIMO Systems for Wireless Sensor Networks

Performance Analysis of Cooperative Virtual MIMO Systems for Wireless Sensor Networks

Adaptive Multi-Node Multiple Input and Multiple Output (MIMO) Transmission for Mobile Wireless Multimedia Sensor Networks

Energy-Efficient MIMO–OFDM Systems

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