PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension
High peak-to-average ratio (PAR) is one of the main problems in Orthogonal Frequency Division Multiplexing (OFDM) systems. This problem becomes more complicated when Space-time codes (STC) are employed as any PAR reduction method should not destroy the relationships among STC encoded OFDM symbols. T...
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Published: |
2008
|
| Subjects: | |
| Online Access: | http://shdl.mmu.edu.my/2962/ |
| _version_ | 1848790196398587904 |
|---|---|
| author | Pradeep Kumara T. G., Amila Moh Lim, Sim |
| author_facet | Pradeep Kumara T. G., Amila Moh Lim, Sim |
| author_sort | Pradeep Kumara T. G., Amila |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | High peak-to-average ratio (PAR) is one of the main problems in Orthogonal Frequency Division Multiplexing (OFDM) systems. This problem becomes more complicated when Space-time codes (STC) are employed as any PAR reduction method should not destroy the relationships among STC encoded OFDM symbols. There are existing PAR reduction methods for STC-OFDM systems. However, these methods do not provide sufficient performance of PAR reduction without complex receivers. In this paper, we propose Modified Active Constellation Extension (Modified ACE) method for STC encoded OFDM systems to provide 3.5dB of PAR improvement at a 10(-3) complementary cumulative density function (CCDF) of PAR. Most importantly, Modified ACE does not require any complex receivers or side information. |
| first_indexed | 2025-11-14T18:08:46Z |
| format | Conference or Workshop Item |
| id | mmu-2962 |
| institution | Multimedia University |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:08:46Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-29622011-09-26T00:58:50Z http://shdl.mmu.edu.my/2962/ PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension Pradeep Kumara T. G., Amila Moh Lim, Sim T Technology (General) QA75.5-76.95 Electronic computers. Computer science High peak-to-average ratio (PAR) is one of the main problems in Orthogonal Frequency Division Multiplexing (OFDM) systems. This problem becomes more complicated when Space-time codes (STC) are employed as any PAR reduction method should not destroy the relationships among STC encoded OFDM symbols. There are existing PAR reduction methods for STC-OFDM systems. However, these methods do not provide sufficient performance of PAR reduction without complex receivers. In this paper, we propose Modified Active Constellation Extension (Modified ACE) method for STC encoded OFDM systems to provide 3.5dB of PAR improvement at a 10(-3) complementary cumulative density function (CCDF) of PAR. Most importantly, Modified ACE does not require any complex receivers or side information. 2008-07 Conference or Workshop Item NonPeerReviewed Pradeep Kumara T. G., Amila and Moh Lim, Sim (2008) PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension. In: 2nd IEEE Conference on Innovative Technologies in Intelligent Systems and Industrial Applications, 12-13 JUL 2008, Cyberjaya, MALAYSIA. http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=W1gbFB46DdE8F6aaJIP&page=100&doc=993 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science Pradeep Kumara T. G., Amila Moh Lim, Sim PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title | PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title_full | PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title_fullStr | PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title_full_unstemmed | PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title_short | PAR Reduction in Space-Time Coded OFDM via Modified Active Constellation Extension |
| title_sort | par reduction in space-time coded ofdm via modified active constellation extension |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/2962/ http://shdl.mmu.edu.my/2962/ |