Christian Hofbauer, Werner Haselmayr, Mario Huemer,
"Pilot Tone Insertion and Utilization in Unique Word OFDM"
: Proceedings of the IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2020), IEEE, 5-2020, ISBN: 978-1-7281-5478-7
Pilot Tone Insertion and Utilization in Unique Word OFDM
Sprache des Titels:
Proceedings of the IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2020)
Unique word-orthogonal frequency division multiplexing (UW-OFDM) provides several performance benefits over conventional cyclic prefix (CP) based OFDM, such as excellent spectral sidelobe suppression properties and an outstanding bit error ratio performance. Aside from idealized assumptions, each communication system faces challenges in conducting various system parameter estimation tasks. This work extends the current UW-OFDM signaling scheme by optimally including pilots tones
in the frequency domain. Pilot tone based estimation of a carrier
frequency offset (CFO) is conducted as a practical estimation example. Simulation results in a multipath environment demonstrate a significantly increased estimation accuracy in UW-OFDM over CP-OFDM, a result predicated on the inherent redundancy present in an UW-OFDM signal. The difference in estimation quality gets even more dominant with increasing CFO.