Eigenbeam transmission over line-of-sight MIMO channels for fixed microwave links

Mecklenbräuker, Christoph F.; Matthaiou, Michail; Viberg, Mats

doi:10.1109/wsa.2011.5741915

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…The idea of using multiple antennas to increase data is also introduced to terrestrial microwave links [5,6]. However, for a terrestrial point-to-point wireless link as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mimo Antennas for a Terrestrial Point-to-Point Wireless Link: From the Optimum Antenna Spacing to a Compact Array

Smith²,

Yang³

2016

PIER B

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Abstract-Multiple-input-multiple-output antennas are investigated for terrestrial point-to-point wireless link. The lack of rich scatters in a terrestrial wireless channel results in an ill-conditioned channel matrix for a long range link with compact arrays, which can cause a high bit error rate. This paper demonstrates that the channel matrix can be improved by carefully selecting the antenna spacing. Unfortunately, an optimum antenna spacing that guarantees a good channel matrix is too large to implement for most long range terrestrial wireless links. On the other hand, a channel capacity study of an 8 × 8 link reveals that multiple antennas do provide more capacity even with small antenna spacing. Constellation multiplexing is then applied to the compact array configuration to solve the unreliable communication problem. In addition, a multilevel maximum ratio combining technique is introduced to improve detection efficiency.

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“…The idea of using multiple antennas to increase data is also introduced to terrestrial microwave links [5,6]. However, for a terrestrial point-to-point wireless link as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mimo Antennas for a Terrestrial Point-to-Point Wireless Link: From the Optimum Antenna Spacing to a Compact Array

Smith²,

Yang³

2016

PIER B

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show abstract

“…In [2], only QPSK is used for 60 GHz frequency, which results in low spectrum efficiency. Another way is to increase the multiplexing gain by MIMO technology including antenna polarization [3,4]. Theoretically, the capacity can be increased unlimitedly with enough antennas when the channel state information is known at the transmitter, but it should be noted that the dimension of the antenna array will be a big problem for large antenna arrays.…”

Section: Introductionmentioning

confidence: 99%

Antenna Array Design for LOS-MIMO and Gigabit Ethernet Switch-Based Gbps Radio System

Zhou

Chen

Zhang

et al. 2012

International Journal of Antennas and Propagation

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The high spectrum efficiency of multiple-input multiple-output (MIMO) transmission traditionally depends on the high multiplexing gain in rich scattering environments, which will not always hold in the line-of-sight (LOS) environments, especially at higher microwave frequency band. In this paper, a novel antenna array design rule is proposed to guarantee full multiplexing gain for LOS-MIMO systems with one- or two-dimensional antenna arrays in LOS scenarios, and the strict perpendicular constraint is released in the two-dimensional case. The minimum antenna array area and the performance sensitivity to the area error are also obtained to guide the practical system design. Then, a demo MIMO-OFDM system with the designed square antenna array at 15 GHz carrier is implemented on a novel Gigabit Ethernet (GE) switch-based software defined radio (SDR) platform, which combines the hardware accelerating units (HAUs) with the general-purpose processors (GPPs). The field evaluation results show that the system throughput and spectrum efficiency are greater than 1 Gbps and 15 bps/Hz, respectively. To the best of our knowledge, it is the first time to demonstrate the Gbps LOS-MIMO-OFDM system at such microwave bands in the world, which can be a successful design example for the next generation wireless backhaul or fixed wireless access.

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Millimeter‐Wave MIMO Transceivers: Theory, Design and Implementation

Sayeed

Brady

2016

Signal Processing for 5G

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Eigenbeam transmission over line-of-sight MIMO channels for fixed microwave links

Cited by 3 publications

References 17 publications

Mimo Antennas for a Terrestrial Point-to-Point Wireless Link: From the Optimum Antenna Spacing to a Compact Array

Mimo Antennas for a Terrestrial Point-to-Point Wireless Link: From the Optimum Antenna Spacing to a Compact Array

Antenna Array Design for LOS-MIMO and Gigabit Ethernet Switch-Based Gbps Radio System

Millimeter‐Wave MIMO Transceivers: Theory, Design and Implementation

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