Dataset for the paper "Joint Quantum-Assisted Channel Estimation and Data Detection", Panagiotis Botsinis, Dimitrios Alanis, Zunaira Babar, Soon Xin Ng and Lajos Hanzo, IEEE Access (Accepted). Results may reproduced using the Graphics Layout Engine (GLE) and MATLAB. Abstract: Joint Channel Estimation (CE) and Multi-User Detection (MUD) has become a crucial part of iterative receivers. In this paper we propose a Quantum-assisted Repeated Weighted Boosting Search (QRWBS) algorithm for CE and we employ it in the uplink of MIMO-OFDM systems, in conjunction with the Maximum A posteriori Probability (MAP) MUD and a near-optimal Quantum-assisted MUD (QMUD). The performance of the QRWBS-aided CE is evaluated in rank-deficient systems, where the number of receive Antenna Elements (AE) at the Base Station (BS) is lower than the number of supported users. The effect of the Channel Impulse Response (CIR) prediction filters, of the Power Delay Profile (PDP) of the channels and of the Doppler frequency have on the attainable system performance is also quantified. The proposed QRWBS-aided CE is shown to outperform the RWBS-aided CE, despite requiring a lower complexity, in systems where iterations are invoked between the MUD, the CE and the channel decoders at the receiver. In a system, where U = 7 users are supported with the aid of P = 4 receive AEs, the joint QRWBS-aided CE and QMUD achieves a 2 dB gain, when compared to the joint RWBS-aided CE and MAP MUD, despite imposing 43% lower complexity. Acknowledgements: The financial support of the European Research Council under the Advanced Fellow Grant, that of the Royal Society’s Wolfson Research Merit Award and that of the Engineering and Physical Sciences Research Council under Grant EP/L018659/1 is gratefully acknowledged. The use of the IRIDIS High Performance Computing Facility at the University of Southampton is also acknowledged. * Figure 9: ETU-U4-P2-Z100-Ksi300-Twbs20-EbN0100-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol in a noiseless scenario, when the RWBS-aided and the QRWBS-aided CE have been employed with the original population update, as well as the proposed population update. * Figure 10: EVA-ETU-30kmh-U4-P2-Z100-Ksi300-Twbs20-EbN0100-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol in a noiseless scenario, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA and ETU channels, both experiencing the same effective normalized Doppler frequency of F_d=0.0046, which corresponds to a user velocity of v=30 km/h. * Figure 11: ETU-35kmh-130kmh-200kmh-U4-P2-Z100-Ksi300-Twbs20-EbN0100-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol in a noiseless scenario, when the RWBS-aided and the QRWBS-aided CE have been employed in ETU channels, when the effective normalized Doppler frequency varies between F_d=0.0054, 0.02, 0.03. * Figure 12: ribbon3d-EVA-EbN00-EbN012-1Ntap.fig plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA channels with F_d=0.005 for various E_b/N_0 values. * Figure 13: ribbon-o1-o9-3D.fig plots the instantaneous MSE performance of the first 9 data OFDM symbols, with the first one following the pilot OFDM symbol, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA channels with F_d=0.005 for E_b/N_0=8 dB and \Xi=50 generations per search. * Figure 14: EVA-U4-P2-Z100-Ksi300-Twbs20-EbN010-bothRx-1Ntap.gle plots the instantaneous MSE performance of the first data OFDM symbol, following the pilot OFDM symbol, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA channels with F_d=0.005, while E_b/N_0=10 dB for both receive AEs. * Figure 15: EVA-U4--P2-Z256-Z512-Z1024-Z2048-ES100-Ksi300-Twbs20-EbN010-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA channels with F_d=0.005 for E_b/N_0=10 dB for the channels of the P=2 receive AEs, when the number of individuals in the QRWBS varies between Z_{DHA}=128, 256, 512, 1024, 2048. * Figure 16: EVA-U4-U6-U8-P2-Z100-Ksi300-Twbs20-EbN0100-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol in a noiseless scenario, when the RWBS-aided and the QRWBS-aided CE have been employed in EVA channels with F_d=0.005. * Figure 17: ETU-U4-U6-U8-P2-Z100-Ksi300-Twbs20-EbN0100-1Ntap.gle plots the average MSE performance of the first data OFDM symbol, following the pilot OFDM symbol in a noiseless scenario, when the RWBS-aided and the QRWBS-aided CE have been employed in ETU channels. * Figure 18: BER-U4-P2-EVA-ICEMUD2-J2-17408bits-Ntap4.gle plots the BER performance of an SDMA-OFDM system supporting U=4 users with P=2 receive AEs, transmitting over EVA channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE. The CIR prediction filter's order is equal to N_{tap}=4, I^{MUD}_{CE}=2 iterations are allowed between the MAP MUD and the CE and I^{MUD-CE}_{DEC}=2 iterations are allowed between the MUD-CE and the decoders. The interleaver length is 17408 bits and a pilot OFDM symbol is transmitted every 17 data OFDM symbols. * Figure 19: BER-U4-P2-ETU-ICEMUD3-J2-8192bits-manyNtaps.gle plots the BER performance of an SDMA-OFDM system supporting U=4 users with P=2 receive AEs, transmitting over ETU channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE. The CIR prediction filter's order varies between N_{tap}={0,1,2,4,8}, I^{MUD}_{CE}=3 iterations are allowed between the MAP MUD and the CE and I^{MUD-CE}_{DEC}=2 iterations are allowed between the MUD-CE and the decoders. The interleaver length is 8192 bits and a pilot OFDM symbol is transmitted every 8 data OFDM symbols. * Figure 20: BER-U4-P2-ETU-manyICEMUD-manyJ-8192bits-4Ntap.gle plots the BER performance of an SDMA-OFDM system supporting U=4 users with P=2 receive AEs, transmitting over ETU channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE. The CIR prediction filter's order is N_{tap}={4} and various combinations of I^{MUD}_{CE} and I^{MUD-CE}_{DEC} iterations are allowed between the MAP MUD, the CE and the decoders. The interleaver length is 8192 bits and a pilot OFDM symbol is transmitted every 8 data OFDM symbols. * Figure 21: BER-U4-P4-ETU-ICEMUD1-J1-8192bits-4Ntap.gle plots the BER performance of an SDMA-OFDM system supporting U=4 users with P=4 receive AEs, transmitting over ETU channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE. The CIR prediction filter's order is N_{tap}={4}, I^{MUD}_{CE}=1 iteration is allowed between the MAP MUD and the CE and I^{MUD-CE}_{DEC}=1 iteration is allowed between the MUD-CE and the decoders. The interleaver length is 8192 bits and a pilot OFDM symbol is transmitted every 8 data OFDM symbols. * Figure 22: BER-U4-P2-ETU-manyICEMUD-J1-8192bits-4Ntap.gle plots the BER performance of an SDMA-OFDM system supporting U=4 users with P=2 receive AEs, transmitting over ETU channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE with and without error-free symbol references. The CIR prediction filter's order is N_{tap}={4} and various I^{MUD}_{CE} iterations are allowed between the MAP MUD and the CE, while only a single MUD-CE-DEC iteration is performed. The interleaver length is 8192 bits and a pilot OFDM symbol is transmitted every 8 data OFDM symbols. * Figure 23: BER-U7-P4-ETU-ICEMUD3-J2-8192bits-4Ntap.gle plots the BER performance of an SDMA-OFDM system supporting U=7 users with P=4 receive AEs, transmitting over ETU channels, when perfect CE is available, as well as when the RWBS and the QRWBS are employed for CE. The CIR prediction filter's order is N_{tap}={4} and I^{MUD}_{CE}=3 iterations are allowed between the MAP MUD and the CE, while I^{MUD-CE}_{DEC}=2 MUD-CE-DEC iterations are performed. The interleaver length is 8192 bits and a pilot OFDM symbol is transmitted every 8 data OFDM symbols.