Diversity Order and Measure of MIMO Antennas in Single-User, Multiuser, and Massive MIMO Wireless Communications

Kshetrimayum, Rakhesh Singh; Mishra, Mohit; Aı̈ssa, Sonia; Koul, Shiban K.; Sharawi, Mohammad S.

doi:10.1109/lawp.2022.3200483

Cited by 10 publications

(7 citation statements)

References 29 publications

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“…(2)]. The diversity order of a MIMO system employing the proposed antenna at the transmitter and receiver ends is found to be 64 (8×8) [22,Eqn. (2)].…”

Section: Resultsmentioning

confidence: 99%

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A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna

Mishra¹,

Chaudhuri²,

Kshetrimayum³

et al. 2023

Preprint

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<p> A sector-shaped compact π/8 partial substrate-integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity is presented. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete mode configuration. The compact cavity radiator is used as an element of a compact 8-port multiple-input multiple-output (MIMO) antenna. The 8-port MIMO antenna occupies the entire full cavity with slots loaded on the top and bottom layers. The fabricated prototype has a -10 dB impedance bandwidth (BW) from 6.006-6.143 GHz. The mutual coupling within the BW is less than -21 dB. The presented MIMO antenna has an envelope correlation coefficient (ECC) less than 0.0027, and a percentage diversity gain reduction below 1.73%, which makes it a suitable candidate for use in MIMO-based wireless communications (This paper has been accepted for publication in <em>IEEE Antennas and Wireless Propagation Letters</em> )</p>

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“…(2)]. The diversity order of a MIMO system employing the proposed antenna at the transmitter and receiver ends is found to be 64 (8×8) [22,Eqn. (2)].…”

Section: Resultsmentioning

confidence: 99%

“…(2)]. The percentage diversity gain reduction (PDGR) for such a MIMO system due to the correlation among antenna elements is calculated using diversity order and diversity measure and found to be below 1.73%, which is relatively low, indicating excellent diversity gain performance [22,Eqn. (3)].…”

Section: Resultsmentioning

confidence: 99%

A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna

Mishra¹,

Chaudhuri²,

Kshetrimayum³

et al. 2023

Preprint

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show abstract

“…The ACC matrix for the dual band MIMO design is calculated using [31] at two resonance frequencies (3.08 and 5.20 GHz) and are given in the table 2. In addition to that, some other MIMO parameters such as diversity order (DO), diversity measure (DM) and percentage diversity gain reduction (PDGR) [32] are also calculated (table 2). From the table, it is seen that the values of CCL at both the resonance frequencies are <0.26982 b/s/Hz.…”

Section: CCLmentioning

confidence: 99%

Circumferential slots based decoupled wideband MIMO antenna for 5G and sub-6 GHz applications

Sharma,

Tiwari,

Singh

2024

Phys. Scr.

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This paper investigates a small size 2×2 wideband multiple input multiple output (MIMO) antenna covering frequency band of 2.61 to 5.52 GHz. The antenna structure consists of elliptical ring patch with multiple circumferential slots. The edge-to-edge separation between the patches are kept 3.6 mm with volumetric dimensions of 30×46×1.6 mm3. The narrow slits are etched in the tapered ground plane to obtain the wideband characteristics. The electromagnetic coupling is improved more than 16 dB by employing the neutralization technique. The measured average gain and radiation efficiency of the proposed antenna are above 2.61dBi and 83.54%, respectively across the operating band. In addition to that, the important MIMO diversity parameters are investigated. The group delay and signal analysis in different orientations are also studied to ensure the quality performance of the antenna. The proposed MIMO antenna is simulated using CST microwave studio and further validated with the measurements. In addition to that, the parallel and orthogonal configuration of 4×4 MIMO antennas are analyzed by extending the proposed 2×2 MIMO design. The 4-port MIMO antennas exhibit the operating frequency bands varying from 2.80 to 5.58 GHz and 3.4 to 5.52 GHz, respectively for parallel and orthogonal MIMO configurations. The diversity parameters of 4-port MIMO antennas are calculated and compared with the measured results to verify its practical applications. Finaly, the SAR analysis of the antenna is presented at 3.08 and 5.20 GHz for 1/10 g tissues and are found 0.111/0.106 and 0.079/0.063 W/Kg, respectively. The proposed MIMO antenna designs are suitable for modern high-speed communication for 5G and sub-6 GHz frequency bands.

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“…Assuming uncorrelated Rayleigh flat fading, the received signal for the k th re-transmission (0 ≤ k ≤ N rt − 1, k is an integer) is given by ( 2) of [36], which is repeated here for convenience Rk = Hk S + Wk (4) where S ∈ C Nt×1 whose elements are drawn from the QPSK constellation, Hk ∈ C Nr×Nt whose elements are mutually independent and C N (0, 2σ 2 H ) and and Wk ∈ C Nr×1 is the additive white Gaussian noise (AWGN) vector whose elements are mutually independent and C N (0, 2σ 2 W ). Note that σ 2 H , σ 2 W denote the variance per dimension (real part or imaginary part) and N r is the number of receive antennas.…”

Section: Su-mmimo With Sctc a System Modelmentioning

confidence: 99%

“…A S wireless technologies evolve beyond 5G [1]- [3], there is a growing need to attain peak data rates of about gigabits per second per user, which is required for high definition video, remote surgery, autonomous vehicles, gaming and so on, while at the same time consuming minimum transmit power. This can only be achieved by using multiple antennas at the transmitter and receiver [4]- [8], small constellations like quadrature shift keying (QPSK) and powerful error correcting codes like turbo or low density parity check (LDPC) codes. Having a large number of antennas in the mobile handset is feasible in mm-wave frequencies [9]- [12] (30 − 300 GHz) due to the small antenna size.…”

Section: Introductionmentioning

confidence: 99%

New Results on Single User Massive MIMO

Vasudevan¹,

Kota²,

Kumar³

et al. 2023

Preprint

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Achieving high bit rates is the main goal of wireless technologies like 5G and beyond. This translates to obtaining high spectral efficiencies using large number of antennas at the transmitter and receiver (single user massive multiple input multiple output or SU-MMIMO). It is possible to have a large number of antennas in the mobile handset at mm-wave frequencies in the range 30 − 300 GHz due to the small antenna size. In this work, we investigate the bit-error-rate (BER) performance of SU-MMIMO in two scenarios (a) using serially concatenated turbo code (SCTC) in uncorrelated channel and (b) parallel concatenated turbo code (PCTC) in correlated channel. Computer simulation results indicate that the BER is quite insensitive to re-transmissions and wide variations in the number of transmit and receive antennas. Moreover, we have obtained a BER of 10 −5 at an average signal-tointerference plus noise ratio (SINR) per bit of just 1.25 dB with 512 transmit and receive antennas (512 × 512 SU-MMIMO system) with a spectral efficiency of 256 bits/transmission or 256 bits/sec/Hz in an uncorrelated channel. Similar BER results have been obtained for SU-MMIMO using PCTC in correlated channel. A semi-analytic approach to estimating the BER of a turbo code has been derived. Index Terms-Single user massive multiple input multiple output (SU-MMIMO), Rayleigh fading, serially concatenated turbo code (SCTC), parallel concatenated turbo code (PCTC), spectral efficiency (SE), signal-to-interference plus noise ratio (SINR) per bit, spatial multiplexing, bit-error-rate (BER).

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Diversity Order and Measure of MIMO Antennas in Single-User, Multiuser, and Massive MIMO Wireless Communications

Cited by 10 publications

References 29 publications

A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna

A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna

Circumferential slots based decoupled wideband MIMO antenna for 5G and sub-6 GHz applications

New Results on Single User Massive MIMO

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