# Hybrid Analog-Digital Beamforming for Massive MIMO Systems

@article{Ioushua2017HybridAB, title={Hybrid Analog-Digital Beamforming for Massive MIMO Systems}, author={Shahar Stein Ioushua and Yonina C. Eldar}, journal={ArXiv}, year={2017}, volume={abs/1712.03485} }

In massive MIMO systems, hybrid beamforming is an essential technique for exploiting the potential array gain without using a dedicated RF chain for each antenna. In this work, we consider the data phase in a massive MIMO communication process, where the transmitter and receiver use fewer RF chains than antennas. We examine several different fully- and partially connected schemes and consider the design of hybrid beamformers that minimize the estimation error in the data. For the hybrid… Expand

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#### References

SHOWING 1-10 OF 25 REFERENCES

Alternating Minimization Algorithms for Hybrid Precoding in Millimeter Wave MIMO Systems

- Mathematics, Computer Science
- IEEE Journal of Selected Topics in Signal Processing
- 2016

Treating the hybrid precoder design as a matrix factorization problem, effective alternating minimization (AltMin) algorithms will be proposed for two different hybrid precoding structures, i.e., the fully-connected and partially-connected structures, and simulation comparisons between the two hybrid precode structures will provide valuable design insights. Expand

Dynamic Subarrays for Hybrid Precoding in Wideband mmWave MIMO Systems

- Computer Science, Mathematics
- IEEE Transactions on Wireless Communications
- 2017

A closed-form solution for fully connected OFDM-based hybrid analog/digital precoding is developed for frequency selective mmWave systems and the results indicate that the developed dynamic subarray solution outperforms the fixed hybrid subarray structures in various system and channel conditions. Expand

Spatially Sparse Precoding in Millimeter Wave MIMO Systems

- Computer Science, Mathematics
- IEEE Transactions on Wireless Communications
- 2014

This paper considers transmit precoding and receiver combining in mmWave systems with large antenna arrays and develops algorithms that accurately approximate optimal unconstrained precoders and combiners such that they can be implemented in low-cost RF hardware. Expand

Large-scale antenna systems with hybrid analog and digital beamforming for millimeter wave 5G

- Computer Science
- IEEE Communications Magazine
- 2015

A reference signal design for the hybrid beamform structure is presented, which achieves better channel estimation performance than the method solely based on analog beamforming, and can be conveniently utilized to guide practical LSAS design for optimal energy/ spectrum efficiency trade-off. Expand

On the Feasibility of Codebook-Based Beamforming in Millimeter Wave Systems With Multiple Antenna Arrays

- Computer Science
- IEEE Transactions on Wireless Communications
- 2015

This work investigates the feasibility of employing multiple antenna arrays to obtain diversity/multiplexing gains in mmwave systems, and develops reduced complexity algorithms for optimizing the choice of beamforming directions, premised on the sparse multipath structure of the mmwave channel. Expand

Hybrid precoding for millimeter wave cellular systems with partial channel knowledge

- Computer Science
- 2013 Information Theory and Applications Workshop (ITA)
- 2013

An iterative hybrid beamforming algorithm for the single user mmWave channel is developed and results show that the proposed algorithm can approach the rates achieved by unconstrained digital beamforming solutions. Expand

A Hybrid RF/Baseband Precoding Processor Based on Parallel-Index-Selection Matrix-Inversion-Bypass Simultaneous Orthogonal Matching Pursuit for Millimeter Wave MIMO Systems

- Computer Science
- IEEE Transactions on Signal Processing
- 2015

A new method of building the joint RF and baseband precoder that reduces the computation complexity of the original precoder reconstruction algorithm and enables highly parallel hardware architecture is proposed. Expand

Pilot contamination mitigation with reduced RF chains

- Computer Science, Mathematics
- 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
- 2017

This paper considers a Bayesian channel estimator and design the pilot sequences to minimize the estimation error and shows that the number of RF chains can be reduced with no significant loss in estimation performance in cases where the receive array is highly correlated. Expand

Optimal designs for space-time linear precoders and decoders

- Mathematics, Computer Science
- IEEE Trans. Signal Process.
- 2002

We introduce a new paradigm for the design of transmitter space-time coding that we refer to as linear precoding. It leads to simple closed-form solutions for transmission over frequency-selective… Expand

Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays

- Computer Science, Mathematics
- IEEE Signal Processing Magazine
- 2013

The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time. Expand