PAR Reduction of Multicarrier Signals Using Injected Tone Constellation

EunJung CHANG  HoYeol KWON  John M. CIOFFI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B   No.10   pp.2936-2939
Publication Date: 2006/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.10.2936
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
peak-to-average ratio (PAR),  tone injection (TI),  injected tone constellation (ITC),  

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Summary: 
Tone Injection (TI) can reduce the high peak-to-average ratio (PAR) which can substantially limit the performance of multicarrier systems without bandwidth loss. However, TI results in peak regrowth since it does not consider second peaks which can be higher than the peak after performing TI and also the average transmit power is increased because of huge constellation. In this paper, a no-rate loss PAR reduction technique, Injected Tone Constellation (ITC), is proposed along with an iterative algorithm to achieve the performance increase and to minimize the average transmit power without high complexity.