Increasing the Bandwidth Efficiency in UW-OFDM

Beschreibung

Unique word orthogonal frequency-division multiplexing (UW-OFDM) prevents intersymbol interference by introducing a unique word (UW), e.g., a sequence of zeros, at the tail of each symbol. Compared to cyclic prefix (CP) OFDM, UW-OFDM in general features a better bit error ratio (BER) while having a slightly lower bandwidth efficiency. In this work, the constraints on the UW are softened, with the dedicated goal to increase the bandwidth efficiency of the communication system. We propose a modification of the so-called non-systematically encoded UW-OFDM scheme that enables an increased bandwidth efficiency by around 5%. The effects of the proposed modifications on the BER as well as on several other performance measures are analyzed.

Zeitraum	06 Nov. 2019
Ereignistitel	Asilomar Conference on Signals, Systems, and Computers
Veranstaltungstyp	Konferenz
Ort	USA/Vereinigte StaatenAuf Karte anzeigen