Home // International Journal On Advances in Telecommunications, volume 5, numbers 3 and 4, 2012 // View article
Authors:
Eugen Victor Cuteanu
Alexandru Isar
Keywords: PAPR; Gradual Projection; Active Constellation Extension; Sequential Block Grouping; Tone Reservation
Abstract:
The Orthogonal Frequency Division Multiplexing is one of the widely used modulation techniques in the present broadband wireless technology. The opportunities and challenges of this modulation technique are derived from its native advantages and disadvantages. One of the main problems is the high peak-to-average power ratio of transmission signal due to the superposition of many subcarriers. In previous works, various hybrid peak-to-average power ratio reduction techniques were presented. One of these techniques was the combination of the standard active constellation extension with the sequential tone reservation scheme. This paper presents a new hybrid peak-to-average power ratio reduction technique, which combines other active constellation extension and tone reservation schemes. This is the case of already known smart gradient projection and new proposed signal compression gradual projection active constellation extension and sequential block ordered tone reservation scheme respectively. The simulations shown that the proposed technique realizes an increased peak-to-average power ratio reduction compared to component methods with similar parameters.
Pages: 188 to 203
Copyright: Copyright (c) to authors, 2012. Used with permission.
Publication date: December 31, 2012
Published in: journal
ISSN: 1942-2601