Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

High Throughput Constant Envelope Pre-coder for Massive MIMO Systems

Prabhu, Hemanth LU ; Rusek, Fredrik LU ; Rodrigues, Joachim LU and Edfors, Ove LU orcid (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:
author
; ; and
organization
publishing date
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}},
}