Link Performance Improvement Using Reconfigurable Multiantenna Systems

Sukumar, C. P.; Eslami, H.; Eltawil, Ahmed M.; Cetiner, Bedri A.

doi:10.1109/lawp.2009.2028300

Cited by 10 publications

(6 citation statements)

References 14 publications

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“…To this end, this section presents the properties of the channel model utilized for our simulations. A part of this section was initially presented in [8].…”

Section: Channel Modelmentioning

confidence: 99%

“…In particular, pattern reconfigurability with an emphasis on beam tilting has received more attention for improving capacity and bit error rates [5]- [8]. The main motivation behind the choice of beam-tilting is that pattern reconfigurability for many common wireless environments offers a better means of obtaining higher degrees of freedom as compared to techniques such as polarization reconfigurability.…”

Section: Introductionmentioning

confidence: 99%

“…However in beam-tilting reconfigurability, the degrees of freedom are only restricted by the antenna design. The capability of dynamically performing beam-tilting with a single MRA also results in a significant reduction in the overall size of wireless communication systems by replacing multiple single-function legacy antennas with a single MRA while maintaining the same performance levels [8].…”

Section: Introductionmentioning

confidence: 99%

“…The authors in [9] explore in larger detail the signal processing aspects of adapting MRA properties. Most recently, in [8], capacity and SER (Symbol Error Rate) of an idealized, simulated beam-tilting MRAs utilizing statistical channel models has been studied establishing a framework that links a generic channel model, reconfigurable antennas and the performance gains realized.…”

Section: Introductionmentioning

confidence: 99%

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Reduced Overhead Training for Multi Reconfigurable Antennas with Beam-Tilting Capability

Eslami

Sukumar

Rodrigo

et al. 2010

IEEE Trans. Wireless Commun.

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This paper proposes low overhead training techniques for a wireless communication system equipped with a Multifunctional Reconfigurable Antenna (MRA) capable of dynamically changing beamwidth and beam directions. A novel microelectromechanical system (MEMS) MRA antenna is presented with radiation patterns (generated using complete electromagnetic full-wave analysis) which are used to quantify the communication link performance gains. In particular, it is shown that using the proposed Exhaustive Training at Reduced Frequency (ETRF) consistently results in a reduction in training overhead. It is also demonstrated that further reduction in training overhead is possible using statistical or MUSIC-based training schemes. Bit Error Rate (BER) and capacity simulations are carried out using an MRA, which can tilt its radiation beam into one of = 4 or 8 directions with variable beamwidth (≈ 2 / ). The performance of each training scheme is quantified for OFDM systems operating in frequency selective channels with and without Line of Sight (LoS). We observe 6 dB of gain at BER = 10 −4 and 6 dB improvement in capacity (at capacity = 6 bits/sec/subcarrier) are achievable for an MRA with = 8 as compared to omni directional antennas using ETRF scheme in a LoS environment.Index Terms-MIMO, MUSIC, training, beam forming, reconfigurable antenna, antenna array, microelectromechanical systems (MEMS).

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“…To this end, this section presents the properties of the channel model utilized for our simulations. A part of this section was initially presented in [8].…”

Section: Channel Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduced Overhead Training for Multi Reconfigurable Antennas with Beam-Tilting Capability

Eslami

Sukumar

Rodrigo

et al. 2010

IEEE Trans. Wireless Commun.

Self Cite

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show abstract

“…To deliver robust and reliable communications, there has recently been significant interest in developing a single Multifunctional Reconfigurable Antenna (MRA) providing pattern reconfigurability with an emphasis on beam tilting that improves wireless communication capacity and bit error rates [1]. The design of an MRA with adaptive radiation pattern for mobile terminals is complex because of the usual tight constrains in the device maximum size.…”

Section: Introductionmentioning

confidence: 99%