Paper Info
Title
Design and Performance Comparison of W-OFDM Under the Nonlinear HPA Environment.
Abstract
Recently, the spectral efficiency improvement of wireless and cellular communications is very important. Several waveforms have been proposed in order to satisfy key performance indicators of the 5th generation (5G) cellular communication. Universal filtered multi-carrier (UFMC) and filter bank multi-carrier (FBMC) and the filtered orthogonal frequency division multiplexing are typical candidate for 5G waveform, but they have some advantages and problems as well. In this paper, a weighted orthogonal frequency division multiplexing (W-OFDM) is considered since W-OFDM has pretty low complexity and comparable merits. In this paper, at first, we describe the system model and operation principle about UFMC, FBMC, and W-OFDM system. Next, we evaluate the out-of-band (OOB) power spectrum and bit error rate (BER) performance of these systems in the linear or nonlinear HPA. Simulation results show that OOB power spectrum and BER performance of UFMC, FBMC, and W-OFDM are similar in the linear operation. From the implementation point of view, if these performance and characteristics are similar, low-complexity is very decisive for the communication processing speed that is very important to the low latency and ultra-fast processing in the receiver. Additionally, under the nonlinear HPA environment, W-OFDM system is more advantageous because W-OFDM system uses a simple time-domain windowing technique in order to reduce OOB power.
Year
DOI
Venue
2018
10.1007/s11277-017-4904-x
Wireless Personal Communications
Keywords
Field
DocType
HPA nonlinearity,W-OFDM,UFMC,FBMC,PAPR
Nonlinear system,Wireless,Computer science,Filter bank,Real-time computing,Spectral density,Spectral efficiency,Latency (engineering),Orthogonal frequency-division multiplexing,Bit error rate
Journal
Volume
Issue
ISSN
98
1
0929-6212
Citations 
PageRank 
References 
1
0.35
7
Authors
2
Name
Order
Citations
PageRank
Changyoung An169.04
Heung-Gyoon Ryu221851.71