Abstract
Unique word - orthogonal frequency division multiplexing (UW-OFDM) is known to feature an excellent bit error ratio performance when compared to conventional OFDM using cyclic prefixes (CP). In recent papers linear and non-linear UW-OFDM receivers have been investigated and compared for proper data vectors consisting of QPSK and 16-QAM symbols. In this work we derive the widely linear minimum mean square error (WLMMSE) estimator for the application to UW-OFDM in combination with real and therefore improper data vectors. For the investigated modulation schemes BPSK and M-ASK our simulation results indicate a significant performance gain of the widely linear estimator over strictly linear methods.
Original language | English |
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Title of host publication | 2013 Asilomar Conference on Signals, Systems and Computers |
Publisher | IEEE Computer Society |
Pages | 1934-1938 |
Number of pages | 5 |
ISBN (Print) | 978-1-4799-2388-5 |
DOIs | |
Publication status | Published - 6 Nov 2013 |
Externally published | Yes |
Event | 2013 Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, USA Duration: 3 Nov 2013 → 6 Nov 2013 |
Conference
Conference | 2013 Asilomar Conference on Signals, Systems and Computers |
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Period | 3/11/13 → 6/11/13 |
Keywords
- Vectors
- Covariance matrices
- Binary phase shift keying
- Generators
- OFDM
- Estimation