Wir verwenden Google für unsere Suche. Mit Klick auf „Suche aktivieren“ aktivieren Sie das Suchfeld und akzeptieren die Nutzungsbedingungen.

# Exploiting Antenna Arrays for Next Generation Wireless Communications Systems

Prof. Lee Swindlehurst (Electrical Engineering and Computer Science, University of California Irvine) is a Hans Fischer Senior Fellow collaborating with TUM professors Josef A. Nossek (Circuit Theory and Signal Processing) and Wolfgang Utschick (Signal Processing Methods). It is estimated that there are more wireless devices in use today than people on the planet. This explosive growth has created a capacity crisis for mobile operators, and the impact of this crisis goes well beyond the inconveniences experienced by casual users. Wireless communications is now a commodity, like roads, water, and electricity, on which the economic development and governmental services of most nations rely. Emergency services, medical information systems, environmental monitoring, smart-grid energy distribution, smart transportation systems -- all of these technologies depend on reliable access to high-speed broadband wireless. To achieve the dramatic improvements in capacity and spectral efficiency needed to accommodate such access and the multitude of users who want access to it anytime and anywhere, dramatic advances in wireless communication technology are required.

This Focus Group is dedicated to the study of how to exploit the presence of multiple antennas or antenna arrays to help achieve the needed improvements in wireless capacity. Multiple antennas offer a number of advantages in this regard: (1) They can increase the number of spatial "channels" over which information can be transferred, leading to a proportional increase in capacity; (2) They can provide a high degree of spatial "selectivity," which in turn can reduce the impact of interference and the leakage of sensitive signals in unwanted directions; and (3) By coherently combining signal reception or coordinating signal transmission at different points in space, they can achieve a significant energy savings -- the increase in power due to additional antenna hardware is more than offset by the combined coherent energy gain. There are several unique aspects of the research conducted in this Focus Group. One of these is the joint consideration of the physical aspects of the antennas and their matching to the subsequent electronic system and signal processing. Another is the study of how such arrays would perform at millimeter wave frequencies above 20-30 GHz, where the antennas are small and a very large number of them can be densely packed together. These two unique research directions come together in the Focus Group's research on so-called "massive" arrays composed of tens and even hundreds of antenna elements. The practical aspects of implementing a massive array at millimeter wave frequencies requires advances in channel modeling and estimation, equalization, interference management, and in practical energy-efficient hardware designs. It is expected that the efforts of this Focus Group will have important implications for the development of next generation (5G) of wireless systems.

TUM-IAS funded doctoral candidates:
Fabian Steiner, Circuit Theory and Signal Processing

## Publications by the Focus Group

### 2018

• Jedda, Hela; Mezghani, Amine; Swindlehurst, A. Lee; Nossek, Josef A.: Quantized Constant Envelope Precoding With PSK and QAM Signaling. IEEE Transactions on Wireless Communications 17 (12), 2018, 8022-8034 more…
• Jedda, Hela; Nossek, Josef A.: On the Statistical Properties of Constant Envelope Quantizers. IEEE Wireless Communications Letters 7 (6), 2018, 1006-1009 more…
• Jedda, Hela; Nossek, Josef A.: Quantized Constant Envelope Precoding for Frequency Selective Channels. 2018 IEEE Statistical Signal Processing Workshop (SSP), IEEE, 2018 more…
• Kong, Chuili; Mezghani, Amine; Zhong, Caijun; Swindlehurst, A. Lee; Zhang, Zhaoyang: Nonlinear Precoding for Multipair Relay Networks With One-Bit ADCs and DACs. IEEE Signal Processing Letters 25 (2), 2018, 303-307 more…
• Kong, Chuili; Mezghani, Amine; Zhong, Caijun; Swindlehurst, A. Lee; Zhang, Zhaoyang: Multipair Massive MIMO Relaying Systems With One-Bit ADC<roman>s</roman> and DAC<roman>s</roman>. IEEE Transactions on Signal Processing 66 (11), 2018, 2984-2997 more…
• Lee Swindlehurst, A.; Jedda, Hela; Fijalkow, Inbar: Reduced Dimension Minimum BER PSK Precoding for Constrained Transmit Signals in Massive MIMO. 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2018 more…
• Li, Ang; Masouros, Christos; Liu, Fan; Swindlehurst, A. Lee: Massive MIMO 1-Bit DAC Transmission: A Low-Complexity Symbol Scaling Approach. IEEE Transactions on Wireless Communications 17 (11), 2018, 7559-7575 more…
• Li, Ang; Masouros, Christos; Swindlehurst, A. Lee: 1-Bit Massive MIMO Downlink Based on Constructive Interference. 2018 26th European Signal Processing Conference (EUSIPCO), IEEE, 2018 more…
• Mezghani, Amine; Swindlehurst, A. Lee: Blind Estimation of Sparse Broadband Massive MIMO Channels With Ideal and One-bit ADCs. IEEE Transactions on Signal Processing 66 (11), 2018, 2972-2983 more…
• Neumann, David; Joham, Michael; Utschick, Wolfgang: Covariance Matrix Estimation in Massive MIMO. IEEE Signal Processing Letters 25 (6), 2018, 863-867 more…
• Neumann, David; Wiese, Thomas; Joham, Michael; Utschick, Wolfgang: A Bilinear Equalizer for Massive MIMO Systems. IEEE Transactions on Signal Processing 66 (14), 2018, 3740-3751 more…
• Neumann, David; Wiese, Thomas; Utschick, Wolfgang: Learning the MMSE Channel Estimator. IEEE Transactions on Signal Processing, 2018, 1 more…
• Pirzadeh, Hessam; Swindlehurst, A. Lee: Spectral Efficiency of Mixed-ADC Massive MIMO. IEEE Transactions on Signal Processing 66 (13), 2018, 3599-3613 more…
• Roth, Kilian; Pirzadeh, Hessam; Swindlehurst, A. Lee; Nossek, Josef A.: A Comparison of Hybrid Beamforming and Digital Beamforming With Low-Resolution ADCs for Multiple Users and Imperfect CSI. IEEE Journal of Selected Topics in Signal Processing 12 (3), 2018, 484-498 more…
• Roth, Kilian; Pirzadeh, Hessam; Swindlehurst, A. Lee; Nossek, Josef A.: Are the Data Rates Predicted by the Analytic Analysis of Receivers with Low Resolution ADCs Achievable? 2018 European Conference on Networks and Communications (EuCNC), IEEE, 2018 more…
• Utschick, Wolfgang; Stockle, Christoph; Joham, Michael; Luo, Jian: Hybrid LISA Precoding for Multiuser Millimeter-Wave Communications. IEEE Transactions on Wireless Communications 17 (2), 2018, 752-765 more…
• Wang, Zihuan; Li, Ming; Liu, Qian; Swindlehurst, A. Lee: Hybrid Precoder and Combiner Design With Low-Resolution Phase Shifters in mmWave MIMO Systems. IEEE Journal of Selected Topics in Signal Processing 12 (2), 2018, 256-269 more…

### 2017

• Andreas Noll, Hela Jedda, Josef A. Nossek: PSK precoding in multi-user MISO systems. 21st International ITG Workshop Smart Antennas, 2017 more…
• Donia Ben Amor, Hela Jedda, Josef A. Nossek: 16 QAM Communication with 1-Bit Transmitters. 21st International ITG Workshop Smart Antennas, 2017 more…
• Jedda, Hela; Mezghani, Amine; Swindlehurst, A. Lee; Nossek, Josef A.: Precoding under instantaneous per-antenna peak power constraint. 2017 25th European Signal Processing Conference (EUSIPCO), IEEE, 2017 more…
• Li, Yongzhi; Tao, Cheng; Lee Swindlehurst, A.; Mezghani, Amine; Liu, Liu: Downlink Achievable Rate Analysis in Massive MIMO Systems With One-Bit DACs. IEEE Communications Letters 21 (7), 2017, 1669-1672 more…
• Li, Yongzhi; Tao, Cheng; Seco-Granados, Gonzalo; Mezghani, Amine; Swindlehurst, A. Lee; Liu, Liu: Channel Estimation and Performance Analysis of One-Bit Massive MIMO Systems. IEEE Transactions on Signal Processing 65 (15), 2017, 4075-4089 more…
• Mezghani, Amine; Swindlehurst, A. Lee: Approaching $B \log ~(1+{\mathrm{ SNR}})$ With Direct Detection and Low-Order Asymmetric Bandpass Filtering. IEEE Communications Letters 21 (11), 2017, 2372-2375 more…
• Pirzadeh, Hessam; Swindlehurst, A. Lee: Spectral Efficiency under Energy Constraint for Mixed-ADC MRC Massive MIMO. IEEE Signal Processing Letters 24 (12), 2017, 1847-1851 more…
• Pirzadeh, Hessam; Swindlehurst, A. Lee: Analysis of MRC for Mixed-ADC massive MIMO. 2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), IEEE, 2017 more…
• Saxena, Amodh Kant; Fijalkow, Inbar; Swindlehurst, A. Lee: Analysis of One-Bit Quantized Precoding for the Multiuser Massive MIMO Downlink. IEEE Transactions on Signal Processing 65 (17), 2017, 4624-4634 more…
• Swindlehurst, A.; Saxena, A.; Mezghani, A.; Fijalkow, I.: Minimum probability-of-error perturbation precoding for the one-bit massive MIMO downlink. 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2017 more…

### 2016

• Buchali, Fred; Steiner, Fabian; Bocherer, Georg; Schmalen, Laurent; Schulte, Patrick; Idler, Wilfried: Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration. Journal of Lightwave Technology 34 (7), 2016, 1599-1609 more…
• Fabian Steiner ; Amine Mezghani ; Lee Swindlehurst ; Josef A. Nossek ; Wolfgang Utschick: Turbo-Like Joint Data-and-Channel Estimation in Quantized Massive MIMO Systems. WSA 2016; 20th International ITG Workshop on Smart Antennas, 2016 more…
• Jedda, Hela; Nossek, Josef A.; Mezghani, Amine: Minimum BER precoding in 1-Bit massive MIMO systems. 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), IEEE, 2016 more…
• Li, Yongzhi; Tao, Cheng; Liu, Liu; Seco-Granados, Gonzalo; Swindlehurst, A. Lee: Channel estimation and uplink achievable rates in one-bit massive MIMO systems. 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), IEEE, 2016 more…
• Saxena, Amodh Kant; Fijalkow, Inbar; Swindlehurst, A. Lee: On one-bit quantized ZF precoding for the multiuser massive MIMO downlink. 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), IEEE, 2016 more…
• Steiner, Fabian; Bocherer, Georg; Liva, Gianluigi: Protograph-Based LDPC Code Design for Shaped Bit-Metric Decoding. IEEE Journal on Selected Areas in Communications 34 (2), 2016, 397-407 more…
• Steiner, Fabian; Bocherer, Georg; Liva, Gianluigi: Protograph-Based LDPC Code Design for Shaped Bit-Metric Decoding. IEEE Journal on Selected Areas in Communications 34 (2), 2016, 397-407 more…
• Usman, Ovais Bin; Jedda, Hela; Mezghani, Amine; Nossek, Josef A.: MMSE precoder for massive MIMO using 1-bit quantization. 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2016 more…
• Wilfried Idler; Fred Buchali; Laurent Schmalen; Eugen Lach; Ralf-Peter Braun; Georg Boecherer; Patrick Schulte; Fabian Steiner: Field Demonstration of 1 Tbit/s Super-Channel Network Using Probabilistically Shaped Constellations. ECOC 2016; 42nd European Conference on Optical Communication, VDE Verlag, 2016 more…
• You, Li; Gao, Xiqi; Swindlehurst, A. Lee; Zhong, Wen: Channel Acquisition for Massive MIMO-OFDM With Adjustable Phase Shift Pilots. IEEE Transactions on Signal Processing 64 (6), 2016, 1461-1476 more…

### 2015

• Bocherer, Georg; Steiner, Fabian; Schulte, Patrick: Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation. IEEE Transactions on Communications 63 (12), 2015, 4651-4665 more…
• Buchali, F.; Bocherer, G.; Idler, W.; Schmalen, L.; Schulte, P.; Steiner, F.: Experimental demonstration of capacity increase and rate-adaptation by probabilistically shaped 64-QAM. 2015 European Conference on Optical Communication (ECOC), IEEE, 2015 more…
• You, Li; Gao, Xiqi; Swindlehurst, A. Lee; Zhong, Wen: Adjustable phase shift pilots for sparse massive MIMO-OFDM channels. 2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), IEEE, 2015 more…