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A Noncoherent Massive MIMO System Employing Beamspace Techniques
- Source :
- IEEE Transactions on Vehicular Technology. 68:11052-11063
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- Noncoherent detection schemes are an appealing and low-complexity alternative in multi-user massive MIMO uplink systems compared to classical coherent detection algorithms, since no actual channel knowledge is required at the receiver. For noncoherent multi-user detection to function, the induced power at the base station is utilized to separate the different users. However, spatial separation is impossible when the users are located in the far-field of the receiving antenna array. Consequently, noncoherent detection fails in such scenarios. To this end, beamspace techniques can be applied, focusing the energy of the incident wave to a smaller subset of the receive antennas and enabling again the noncoherent detection scheme. This paper analyzes the beamspace capabilities of a dielectric lens and an analog beamforming network applied at the receiver. Furthermore, a sub-array architecture is proposed, relaxing the design requirements for practical implementation. It is shown that noncoherent detection in combination with beamspace techniques performs comparably to channel-estimation-based detection. In addition, the sub-array architecture revealed a significant performance enhancement accompanied by a reduced user separability.<br />acceptedVersion
- Subjects :
- Beamforming
Computer Networks and Communications
Computer science
MIMO
Base stations
Aerospace Engineering
Dielectric
MIMO systems
Antenna array
Base station
Linse
Radar
Automatic detection
Telecommunications link
DDC 620 / Engineering & allied operations
Electronic engineering
Antenna arrays
Datenfunknetz
Electrical and Electronic Engineering
Lenses
Computer Science::Information Theory
Multiuser detection (Telecommunication)
Function (mathematics)
Wireless communication systems
Funkanlage
Power (physics)
Dielectrics
Automotive Engineering
Receiving antennas
Detektion
ddc:620
Massive MIMO
Energy (signal processing)
Subjects
Details
- ISSN :
- 19399359 and 00189545
- Volume :
- 68
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Vehicular Technology
- Accession number :
- edsair.doi.dedup.....9103b076f047dd5f64424a321bdd6031