Generalized Spatial Modulation Based Reduced-RF-Chain Millimeter-Wave Communications

Ishikawa, Naoki; Rajashekar, Rakshith; Sugiura, Shinya; Hanzo, Lajos

doi:10.1109/tvt.2016.2555378

Cited by 73 publications

(69 citation statements)

References 22 publications

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“…All data supporting this study are openly available from the University of Southampton repository at http://doi.org/10.5258/SOTON/D0433 is activated in each channel use, the SM system completely eliminates the inter-channel interference (ICI) at the receiver, thereby enabling low-complexity single-stream ML detection [9]. The benefits of energy efficient transmitter and of lowcomplexity optimal detection at the receiver have promoted the SM scheme to an attractive candidate for next generation wireless systems [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Rajashekar

Hari

Hanzo

2018

IEEE Trans. Veh. Technol.

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Abstract-The extensive study of transmit antenna (TA) subset selection (TAS) in the context of spatial modulation (SM) has recently revealed that significant performance gains are attainable compared to SM systems operating without TAS. However, the existing TAS techniques conceived for SM were studied by considering a frequency-flat channel, which does not represent practical frequency-selective channels. In this paper, we address this open problem by designing TAS schemes for zero-padded single-carrier SM systems. Specifically, we employ a partial successive interference cancellation (SIC) receiver and invoke Euclidean distance based transmit antenna subset selection (ED-TAS) for each of the sub-channels. Furthermore, we show using theoretical analysis that the parallel sub-channels obtained are nearly identical, which enables us to employ majority logic decision to obtain a single TA subset to be used in all the subchannels. The computational burden is additionally reduced by restricting the number of sub-channels over which the ED-TAS technique is invoked. Furthermore, the proposed TAS schemes are extended to the multi-user scenario. The theoretical insights developed are validated using simulation results. Specifically, a signal-to-noise ratio (SNR) gain as high as 3dB is observed in the single user scenario and about 1dB in case of a two-user scenario upon employing our TAS.

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Section: Introductionmentioning

confidence: 99%

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Rajashekar

Hari

Hanzo

2018

IEEE Trans. Veh. Technol.

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confidence: 99%

“…In [16], the application of analog beamforming (ABF) in GenSM-aided mmWave MIMO systems was explored. It was shown by [16] that, aided with ABF, the constrained capacity of the proposed system had the potential to approach the unprecoded MIMO capacity in low SNR regions, while maintaining a reduced-RF-chain structure. However, the preceding research on GenSM-aided mmWave MIMOs [14]- [16] all failed to fully exploit the transmitter's knowledge of the channel state information (CSI), hence their achievable rates were far worse than the optimal MIMO capacity achieved by waterfilling precoding [25].…”

mentioning

confidence: 99%

“…It was shown by [16] that, aided with ABF, the constrained capacity of the proposed system had the potential to approach the unprecoded MIMO capacity in low SNR regions, while maintaining a reduced-RF-chain structure. However, the preceding research on GenSM-aided mmWave MIMOs [14]- [16] all failed to fully exploit the transmitter's knowledge of the channel state information (CSI), hence their achievable rates were far worse than the optimal MIMO capacity achieved by waterfilling precoding [25]. Although [17] considered the issue of analog precoding for GenSM-aided mmWave MIMO, the performance was still far from optimal due to the lack of digital precoding.…”

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confidence: 99%

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Spatial Modulation for More Spatial Multiplexing: RF-Chain-Limited Generalized Spatial Modulation Aided MM-Wave MIMO With Hybrid Precoding

Wang

Song

2018

IEEE Trans. Commun.

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The application of hybrid precoding in millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems has been proved effective for reducing the number of radio frequency (RF) chains.However, the maximum number of independent data streams is conventionally restricted by the number of RF chains, which leads to limiting the spatial multiplexing gain. To further improve the achievable spectral efficiency (SE), in this paper we propose a novel generalized spatial modulation (GenSM) aided mmWave MIMO system to convey an extra data stream via the index of the active antennas group, while no extra RF chain is required. Moreover, we also propose a hybrid analog and digital precoding scheme for SE maximization. More specifically, a closed-form lower bound is firstly derived to quantify the achievable SE of the proposed system. By utilizing this lower bound as the cost function, a two-step algorithm is proposed to optimize the hybrid precoder. The proposed algorithm not only utilizes the concavity of the cost function over the digital power allocation vector, but also invokes the convex ℓ ∞ relaxation to handle the non-convex constraint imposed by analog precoding. Finally, the proposed scheme is shown via simulations to outperform state-of-the-art mmWave MIMO schemes in terms of achievable SE.

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“…On the other hand, the issues of broadband channel detection, precoding, and signal constellation design are developed in [29]- [32]. Moreover, GSM systems have been studied both in the context of 5G multiuser and multi-cell communication systems [33] [34] as well as in millimeter-wave communications [35].…”

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confidence: 99%

Compressed-Sensing Assisted Spatial Multiplexing Aided Spatial Modulation

Xiao

et al. 2018

IEEE Trans. Wireless Commun.

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Abstract-Spatial-Multiplexing aided Spatial Modulation (SMx-SM) is proposed, which intrinsically amalgamates the concept of Vertical Bell Labs Space-Time (V-BLAST) and Spatial Modulation (SM) to attain a high transmission rate, despite its low number of Radio Frequency (RF) chains at the transmitter. Specifically, in the SMx-SM scheme, the Transmit Antennas (TAs) are partitioned into groups and the SM technique is applied individually to each group. Furthermore, lowcomplexity threshold-aided Compressive Sensing (CS) based and Message Passing (MP) based detectors are derived for our SMx-SM system. Our simulation results show that the proposed SMx-SM system exhibits a better performance despite its lower complexity than the Conventional Generalized Spatial Modulation (C-GSM) system. More importantly, the proposed SMx-SM system is capable of providing considerable performance gains over the V-BLAST system at the same number of RF chains and throughput. Finally, an upper bound is derived for the Average Bit Error Probability (ABEP), which is confirmed by our simulation results.

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Generalized Spatial Modulation Based Reduced-RF-Chain Millimeter-Wave Communications

Cited by 73 publications

References 22 publications

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Spatial Modulation for More Spatial Multiplexing: RF-Chain-Limited Generalized Spatial Modulation Aided MM-Wave MIMO With Hybrid Precoding

Compressed-Sensing Assisted Spatial Multiplexing Aided Spatial Modulation

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