Sixty years of coherent versus non-coherent tradeoffs and the road from 5G to wireless futures

C Xu, N Ishikawa, R Rajashekar, S Sugiura… - IEEE …, 2019 - ieeexplore.ieee.org
Sixty years of coherent versus non-coherent tradeoff as well as the twenty years of coherent
versus non-coherent tradeoff in Multiple-Input Multiple-Output (MIMO) systems are surveyed …

The achievable rate analysis of generalized quadrature spatial modulation and a pair of low-complexity detectors

J An, C Xu, Y Liu, L Gan, L Hanzo - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Generalized quadrature spatial modulation (GQSM) seamlessly amalgamates the
generalized spatial modulation (GSM), quadrature spatial modulation (QSM) and vertical …

Generalized space time block coded spatial modulation for open-loop massive MIMO downlink communication systems

L **ao, D Chen, I Hemadeh, P **ao… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this paper, we propose a generalized space-time block coded spatial modulation (GSTBC-
SM) scheme for open-loop massive multiple-input and multiple-output (MIMO) downlink …

Differential-detection aided large-scale generalized spatial modulation is capable of operating in high-mobility millimeter-wave channels

N Ishikawa, R Rajashekar, C Xu… - IEEE Journal of …, 2019 - ieeexplore.ieee.org
A large-scale differential-detection aided generalized spatial modulation (GSM) system is
proposed, which relies on a novel Gram-Schmidt basis set and an adaptive low-complexity …

Artificially time-varying differential MIMO for achieving practical physical layer security

N Ishikawa, JM Hamamreh, E Okamoto… - IEEE Open Journal …, 2021 - ieeexplore.ieee.org
In this paper, we propose a differential multiple-input multiple-output (MIMO) scheme based
on the novel concept of chaos-based time-varying unitary matrices to demonstrate—for the …

Differentially-encoded rectangular spatial modulation approaches the performance of its coherent counterpart

L **ao, P **ao, H Ruan, N Ishikawa, L Lu… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
A simplified rectangular differential spatial modulation (S-RDSM) scheme is conceived for
massive multiple-input multiple-output (MIMO) systems dispensing with the channel state …

Bandwidth-efficient generalized differential spatial modulation

RY Wei, SL Chen, YH Lin… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Differential spatial modulation (DSM) can transmit additional data bits by selecting indexes
of antennas without the pilot overhead and increasing radio frequency circuits and power …

Differential STBC-SM scheme for uplink multi-user massive MIMO communications: System design and performance analysis

J Zhu, L **ao, P **ao, A Quddus… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, a novel differential space-time block coded spatial modulation (differential
STBC-SM) is proposed for uplink multi-user massive multiple-input multiple-output (MIMO) …

“Near-perfect” finite-cardinality generalized space-time shift keying

C Xu, P Zhang, R Rajashekar… - IEEE Journal on …, 2019 - ieeexplore.ieee.org
Two decades of full-diversity high-rate MIMO research has created perfect Space-Time
Block Codes (STBCs), including the Golden code. However, the major stumbling block of …

Constant-envelope space-time shift keying

C Xu, T Bai, J Zhang, RG Maunder… - IEEE Journal of …, 2019 - ieeexplore.ieee.org
From the power amplifier's perspective, the peak-to-average power ratio (PAPR) is of
essential importance, especially for both single-RF and reduced-RF multiple-input multiple …