Evaluation of the Performance of Multiantenna Terminals Using a New Approach

Suvikunnas, P.; Villanen, J.; Sulonen, K.; Icheln, Clemens; Ollikainen, J.; Vainikainen, P.

doi:10.1109/tim.2006.873815

Cited by 29 publications

(13 citation statements)

References 17 publications

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“…The tool called Measurement-Based Antenna TestBed (MEBAT) was developed and discussed in detail in [35], and was used extensively for MAs performance evaluation in [36]. The radio channels used in this work were from an extensive double directional TKK Radio Channel Measurements database, previously obtained for 5300 MHz frequency band.…”

Section: Measurement-based Antenna Testbedmentioning

confidence: 99%

“…An ideal isotropic antenna is shown to be useful reference in MIMO performance evaluation [35,36,40]. A computational twoelement uncorrelated antenna referred to as '2-ISO' is used for power normalization.…”

Section: Measurement-based Antenna Testbedmentioning

confidence: 99%

“…MIMO channel capacity for the i -th mobile location along the route, C (i) can be expressed as [35,36,40]:…”

Section: Mimo Channel Capacity and Transferred Signal Powermentioning

confidence: 99%

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Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Al‐Hadi

Jamaly²,

Haneda³

et al. 2013

PIER B

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Abstract-Design of multi-element antennas (MA) for small mobile terminals operating at higher frequencies remains challenging despite smaller antenna dimension and possibility of achieving electrically large separation between them. In this paper, the importance of the type of radiating elements operating at 3400-3600 MHz and their locations on the terminal chassis is highlighted. An isotropic radiation pattern that receives incoming signals from arbitrary directions is obtained by combining the radiation patterns of multiple antennas with localized chassis current distribution. Four MA configurations with two-and eight-element antennas are designed and evaluated experimentally in indoor propagation environments. Our proposed designs of MAs provide the highest MIMO channel capacity compared to their counterparts using antennas with less localized chassis current distribution, even in the presence of user's hand.

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Section: Measurement-based Antenna Testbedmentioning

confidence: 99%

Section: Measurement-based Antenna Testbedmentioning

confidence: 99%

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Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Al‐Hadi

Jamaly²,

Haneda³

et al. 2013

PIER B

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show abstract

“…The SNR is directly proportional to the link gain, which is basically the mean effective gain (MEG) between a receive and a transmit antenna in multipath channels (Some authors use Mean Effective Link Gain (MELG), see [5].). Hence, maximizing MEG implies that SNR requirements can be met without increasing transmit power which in addition will improve battery life of handsets.…”

Section: Introductionmentioning

confidence: 99%

On Some Optimal Mimo Antenna Coefficients in Multipath Channels

Glazunov¹,

Zhang

2011

PIER B

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Abstract-This paper derives some optimum transmit and receive antenna coefficients in wireless multipath channels based on the spherical vector wave multimode expansion of the multiple-input multiple-output (MIMO) channel matrix.The derived antenna coefficients satisfy the following specific optimization criteria: (i) maximum MIMO mean effective link gain (link MEG) based on the multimode channel realizations or (ii) maximum MIMO link MEG based on the multimode correlation matrix or (iii) correlation minimization by diagonalization of the MIMO full-correlation matrix. It is shown that the proposed approach leads to matrix equations belonging to the nearest Kronecker product (NKP) problem family, which in general have no trivial solution. However, we show that exact solutions are provided to the posed NKP problems under the assumption of the Kronecker model for the MIMO full-correlation matrix. The results are illustrated by numerical examples. The proposed approach is a complement to existing antenna pattern analysis methods.

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“…The plane wave representation of the received signal was combined with the simulated dual-polarised 3D radiation patterns of the handset antennas using the measurement-based antenna test bed (MEBAT) [2]. To examine the effect of antenna orientation, antenna radiation patterns were rotated to L ¼ 8 different 'look directions' (45 azimuth grid).…”

mentioning

confidence: 99%

Influence of antenna configurations on performance of STBC in urban microcells

Salo¹,

Badic²,

Suvikunnas³

et al. 2005

Electron. Lett.

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Based on urban microcell channel measurements, the bit error rate performance of a space-time block code with four transmit antennas using various dual-branch receive antenna configurations, is evaluated. It is demonstrated that with realistic handset antennas, it is possible to achieve performance very close to that of the theoretical uncorrelated Rayleigh case, although proximity of operator tissue (e.g. head) will result in several decibels performance degradation.Introduction: The performance of coded data transmission over multiple-input multiple-output (MIMO) channels depends on the spatial characteristics of antennas and the propagation environment. Even so, it is typically evaluated using idealised channel models, that are unable to capture the combined effect of real-world radio channels and handset antennas on wireless link performance. The three main factors degrading performance of real-world MIMO communications systems are spatial correlation, channel coefficient power imbalance, and SNR degradation owing to unfavourable antenna orientation. In particular, field patterns of realistic mobile handset antennas are not omnidirectional, and the received signal typically arrives from few dominating directions, or angular clusters. As a consequence, directivity and orientation of the antenna patterns play an important role in estimating system performance. In this Letter, we evaluate the effect of antennas on the bit error ratio (BER) performance of a quasiorthogonal space-time block code (QSTBC) for four transmit antennas in a practical urban microcell scenario.

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Evaluation of the Performance of Multiantenna Terminals Using a New Approach

Cited by 29 publications

References 17 publications

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

On Some Optimal Mimo Antenna Coefficients in Multipath Channels

Influence of antenna configurations on performance of STBC in urban microcells

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