Investigation of error performance in network coded MIMO-VBLAST wireless communication systems

Paper aims to enhance the performance of bit error rate (BER) in wireless communication based on the multiple-input multiple-output (MIMO) system of vertical Bell laboratories layered space-time (VBLAST) algorithm. The VBLAST algorithm uses zero-forcing (ZF) and the minimum mean square error (MMSE)...

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Bibliographic Details
Published in:Journal of Electrical Engineering 2019-08, Vol.70 (4), p.273-284
Main Authors: Farzamnia, Ali, Hlaing, Ngu War, Kong, Lillian Eda, Haldar, Manas Kumar, Rezaii, Tohid Yousefi
Format: Article
Language:English
Subjects:
Adaptive filters
Algorithms
Antennas
Binary phase shift keying
Bit error rate
Codes
Computer simulation
Error analysis
Fading
MIMO communication
minimum mean square error
Modulation
multiple input multiple output
physical layer network coding
Quadrature phase shift keying
Random noise
vertical Bell laboratories layered space-time
Wireless communication systems
Wireless communications
Wireless networks
zero forcing
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Summary:Paper aims to enhance the performance of bit error rate (BER) in wireless communication based on the multiple-input multiple-output (MIMO) system of vertical Bell laboratories layered space-time (VBLAST) algorithm. The VBLAST algorithm uses zero-forcing (ZF) and the minimum mean square error (MMSE) to evaluate the BER of wireless communication. MIMO VBLAST techniques function as an adaptive filter and can minimize the interference and multipath fading in the received signal of the channel. Physical layer network coding (PNC) is a new technique used to exploit the spatial diversity of the MIMO VBLAST system to improve the throughput and performance of wireless communication. The bit-error-rate (BER) of proposed VBLAST MIMO with PNC with binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) modulation over the additive white Gaussian noise and Rayleigh fading channel are analyzed. The performance of both BPSK and QPSK modulation in two and four antennas are compared. From the simulation results, it was found that the proposed scheme MIMO VBLAST PNC has a 45.2 % higher BER performance compared to the traditional MIMO scheme with an increase in the BER using MMSE and ZF respectively in both two and four antennas.
ISSN:1339-309X
1335-3632
1339-309X
DOI:10.2478/jee-2019-0057