Abstract
Unique word orthogonal frequency division multiplexing (UW-OFDM) inherently introduces a complex number Reed Solomon (RS) code. Originally, the code generator matrix of systematic coded UW-OFDM had been designed rather intuitively by minimizing the mean redundant energy. In this work we justify this approach by applying a cost function that incorporates the overall transceiver chain including a linear minimum mean square error (LMMSE) data estimator. In addition to the LMMSE estimator we investigate a nonlinear sphere detection (SD) receiver for both systematic and nonsystematic coded UW-OFDM. We study and interpret the estimators' performance and their diverse ability to exploit the redundant energy.
Originalsprache | Deutsch (Österreich) |
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Aufsatznummer | 6184288 |
Seiten (von - bis) | 340-343 |
Seitenumfang | 4 |
Fachzeitschrift | IEEE Signal Processing Letters |
Jahrgang | 19 |
Ausgabenummer | 6 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Juni 2012 |
Extern publiziert | Ja |
Schlagwörter
- OFDM
- Frequency domain analysis
- Time domain analysis
- Estimation