scholarly journals Spatial Correlation Based Transmit Antenna Selection Assisted Fully Generalized Spatial Modulation for Peer-to-Peer Communications

2021 ◽  
Author(s):  
Vinoth Babu Kumaravelu ◽  
Gudla Vishnu Vardhan ◽  
Asha S ◽  
Prakasam P ◽  
Arthi Murugadass ◽  
...  
Keyword(s):  
Spatial Correlation ◽  
Mimo Systems ◽  
Antenna Selection ◽  
Peer To Peer ◽  
Spatial Modulation ◽  
Small Cells ◽  
Small Scale ◽  
Next Generation ◽  
Transmit Antenna Selection ◽  
Millimetre Wave

Abstract The next generation technologies like device-to-device ( D2D ) and small cells employ small scale multiple input multiple output ( MIMO ) systems for peer-to-peer ( P2P ) communications. Due to higher spectral and energy efficiencies , spatial modulation (SM) has become one of the dominant next generation technologies. To maximize spectral efficiency and user experience, high rate SM variants like fully generalized spatial modulation ( FGSM ) can be employed for P2P applications. Due to insufficient spacing between antenna elements of devices, access points (AP), millimetre wave ( mmWave ) and sub- THz bands of operations, the performance of SM variants are hindered in P2P scenarios. The average bit error rate ( ABER ) performance of FGSM is severely degraded by atleast 13 dB under spatially correlated channel conditions. To enhance the performance of FGSM , three different transmit antenna selection ( TAS ) schemes are utilized, which eliminate transmit antennas with maximum spatial correlation. First TAS scheme performs antenna selection based on spatial correlation angle alone, whereas other two schemes use channel capacity in addition to spatial correlation angle. Through extensive Monte Carlo simulations, it has been proved that TAS based on spatial correlation ( TAS -SC- FGSM ) scheme offers a performance gain of at least 8 dB over conventional FGSM without antenna selection ( FGSM - NTAS ). TAS -SC- FGSM also outperforms other two hybrid TAS schemes at the cost of higher computational complexity.

scholarly journals A STUDY ON LOW-COMPLEXITY TRANSMIT ANTENNA SELECTION FOR GENERALIZED SPATIAL MODULATION

2018 ◽  
Vol 19 (2) ◽  
pp. 105-117 ◽  
Author(s):  
Adewale Alafia ◽  
Simeon Olumide Ajose ◽  
Agbotiname Lucky Imoize
Keyword(s):  
Monte Carlo ◽  
Mimo Systems ◽  
Antenna Selection ◽  
Average Power ◽  
Low Complexity ◽  
Spatial Dimension ◽  
Spatial Modulation ◽  
Error Performance ◽  
Transmit Antenna Selection ◽  
Power Effect

ABSTRACT: Generalized spatial modulation (GSM) maps its information to the index of the transmit antenna combination, making simultaneous transmission of multiple symbol possible. However, SM outperform GSM scheme in terms of error performance of the same data rate, due to average power effect. Transmit and receive diversity or the combination of both allow huge improvement in mimo systems in  terms of error performance. In this paper, we investigate a near optimal low-complexity Euclidean distance antenna selection (LC-EDAS) technique in GSM system, to further improve the performance of the conventional GSM system. The LC-EDAS technique independently search across signal and spatial dimension to eliminate the worse channel prior to transmission. Secondly, we investigate a sub-optimal low-complexity transmit antenna selection (LCTAS) in the GSM system to further reduce the computational complexity (CC) imposed by LC-EDAS. The Monte Carlo simulation results obtained reveals a trade-off between the GSM scheme with LC-EDAS and GSM scheme with sub-optimal transmit antenna selection in terms of error performance and CC. ABSTRAK: Modulasi Spatial Keseluruhan (GSM) menghubung informasi kepada indeks kombinasi antena yang dipancarkan, membuatkan pemancaran keseluruhan simbol dapat dilakukan. Walau bagaimanapun, SM lebih bagus daripada skim GSM pada prestasi kesilapan pada kadar data yang sama, kerana kesan purata kuasa. Kepelbagaian penghantaran dan penerimaan ataupun kombinasi keduanya memberi pembaharuan yang lebih besar dalam sistem mimo pada prestasi kesalahan. Penyelidikan ini akan mengkaji optima terdekat Euclidean kurang rumit, melalui teknik (LC-EDAS) pilihan jarak antenna dalam sistem GSM, bagi menambah prestasi sistem GSM sedia ada. Teknik LC-EDAS secara sendiri mencari signal dan dimensi separa bagi mengurangkan saluran lebih teruk semasa penghantaran. Kedua, kami mengkaji sub-optima proses pemilihan kurang rumit penyebaran antena (LCTAS) dalam sistem GSM bagi mengurangkan kerumitan pengiraan (CC) yang dikenakan oleh LC-EDAS. Keputusan simulasi Monte Carlo yang diperoleh menunjukkan timbangan antara skim GSM dan LC-EDAS dan skim GSM bersama sub-optima proses pemilihan penyebaran antena berdasarkan kesilapan prestasi dan CC.

Low‐complexity transmit antenna selection for spatial modulation

2015 ◽  
Vol 51 (19) ◽  
pp. 1548-1550 ◽  
Author(s):  
Yue Xiao ◽  
Lu Yin ◽  
Yu Wang ◽  
Lei Li ◽  
Wei Xiang
Keyword(s):  
Antenna Selection ◽  
Low Complexity ◽  
Spatial Modulation ◽  
Transmit Antenna Selection ◽  
Selection For

Secure Precoding Aided Spatial Modulation via Transmit Antenna Selection

2019 ◽  
Vol 68 (9) ◽  
pp. 8893-8905 ◽  
Author(s):  
Yu Huang ◽  
Miaowen Wen ◽  
Beixiong Zheng ◽  
Xiang Cheng ◽  
Liuqing Yang ◽  
...  
Keyword(s):  
Antenna Selection ◽  
Spatial Modulation ◽  
Transmit Antenna Selection

A Novel Transmit Diversity Technique for MIMO System

2012 ◽  
Vol 468-471 ◽  
pp. 355-359
Author(s):  
You Yan Zhang ◽  
Shu Yue Hong
Keyword(s):  
Likelihood Ratio ◽  
Mimo Systems ◽  
Antenna Selection ◽  
Mimo System ◽  
Signal To Noise Ratio ◽  
Gray Code ◽  
Transmit Antenna Selection ◽  
Selection Scheme ◽  
Log Likelihood ◽  
Log Likelihood Ratio

The antenna diversity based on log-likelihood ratio (LLR) is better than that based on signal-to-noise ratio (SNR) in bit error rate performance for MIMO systems. Thus in this paper, we present a novel transmit antenna selection scheme based on bit log-likelihood ratio when the Alamouti code is employed .Then the BER expressions of application based on Bit-LLR (BLLR) for MPSK and MQAM modulation with Gray code are derived. The simulation results show that the new scheme based on BLLR is superior to SNR. With the increase of the transmit antennas, the performance of system is improved significantly. Furthermore, the diversity order is the same as that of the full complexity systems.

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