High Throughput Constant Envelope Pre-coder for Massive MIMO Systems
(2015) IEEE International Symposium on Circuits and Systems (ISCAS), 2015- Abstract
- This study describes a high throughput constant envelope (CE) pre-coder for Massive MIMO systems. A large number of antennas (M), in the order of 100s, serve a relatively small number of users (K) simultaneously. The stringent amplitude constraint (only phase changes) in the CE scheme is motivated by the use of highly power-efficient non-linear RF power amplifiers. We propose a scheme that computes the CE signals to be transmitted based on box-constrained regression (coordinatedescent),with an O(2MK) complexity per iteration per user
symbol. A highly scalable systolic architecture is implemented, where M Processing Elements (PEs) perform the pre-coding for a system with up to K = 16 users. This systolic architecture results in a... (More) - This study describes a high throughput constant envelope (CE) pre-coder for Massive MIMO systems. A large number of antennas (M), in the order of 100s, serve a relatively small number of users (K) simultaneously. The stringent amplitude constraint (only phase changes) in the CE scheme is motivated by the use of highly power-efficient non-linear RF power amplifiers. We propose a scheme that computes the CE signals to be transmitted based on box-constrained regression (coordinatedescent),with an O(2MK) complexity per iteration per user
symbol. A highly scalable systolic architecture is implemented, where M Processing Elements (PEs) perform the pre-coding for a system with up to K = 16 users. This systolic architecture results in a very high throughput of 500 Msamples/sec (at 500 MHz clock rate) with a gate count of 14 K per PE in 65 nm technology. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5045467
- author
- Prabhu, Hemanth LU ; Rusek, Fredrik LU ; Rodrigues, Joachim LU and Edfors, Ove LU
- organization
- publishing date
- 2015
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- massive mimo, pre-coding, constant envelope, gradient descent
- host publication
- 2015 IEEE International Symposium on Circuits and Systems (ISCAS)
- pages
- 4 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE International Symposium on Circuits and Systems (ISCAS), 2015
- conference location
- Lisbon, Portugal
- conference dates
- 2015-05-24 - 2015-05-27
- external identifiers
-
- scopus:84946225449
- ISBN
- 978-1-4799-8391-9
- DOI
- 10.1109/ISCAS.2015.7168930
- project
- Distributed antenna systems for efficient wireless systems
- language
- English
- LU publication?
- yes
- id
- f5b0e4bf-e466-41c5-99a4-7385faa50ecb (old id 5045467)
- date added to LUP
- 2016-04-04 11:58:17
- date last changed
- 2024-03-30 16:48:10
@inproceedings{f5b0e4bf-e466-41c5-99a4-7385faa50ecb, abstract = {{This study describes a high throughput constant envelope (CE) pre-coder for Massive MIMO systems. A large number of antennas (M), in the order of 100s, serve a relatively small number of users (K) simultaneously. The stringent amplitude constraint (only phase changes) in the CE scheme is motivated by the use of highly power-efficient non-linear RF power amplifiers. We propose a scheme that computes the CE signals to be transmitted based on box-constrained regression (coordinatedescent),with an O(2MK) complexity per iteration per user<br/><br> symbol. A highly scalable systolic architecture is implemented, where M Processing Elements (PEs) perform the pre-coding for a system with up to K = 16 users. This systolic architecture results in a very high throughput of 500 Msamples/sec (at 500 MHz clock rate) with a gate count of 14 K per PE in 65 nm technology.}}, author = {{Prabhu, Hemanth and Rusek, Fredrik and Rodrigues, Joachim and Edfors, Ove}}, booktitle = {{2015 IEEE International Symposium on Circuits and Systems (ISCAS)}}, isbn = {{978-1-4799-8391-9}}, keywords = {{massive mimo; pre-coding; constant envelope; gradient descent}}, language = {{eng}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{High Throughput Constant Envelope Pre-coder for Massive MIMO Systems}}, url = {{https://lup.lub.lu.se/search/files/5897452/5045470.pdf}}, doi = {{10.1109/ISCAS.2015.7168930}}, year = {{2015}}, }