Definitions
CP-free OFDM/OFDMA system refers to an orthogonal frequency-division multiplexing (OFDM) system or an orthogonal frequency-division multiple access (OFDMA) system, without insertion of cyclic prefix (CP) at the transmitter.
History Background
With an increasing demand for a higher data rate, such as 5G, more bandwidths will be required, which makes transmit signals extremely sensitive to inter-symbol interference (ISI) in a multipath channel. Orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency-division multiple access (OFDMA), working as a multi-carrier transmission scheme, receives much attention due to its ability to combat ISI. A common approach to tackle ISI for an OFDM/OFDMA system is to insert a cyclic prefix (CP) at the beginning of every block before transmission. As long as the length of CP is made longer than channel delay spread, ISI...
Keywords
- OFDM Block
- Orthogonal Frequency Division Multiplexing (OFDM)
- Peak To Average Power Ratio (PAPR)
- Delay Spread
- Extended Typical Urban (ETU)
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References
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Liu, X. (2018). Cyclic Prefix-Free OFDM/OFDMA Systems, Design, and Implementation. In: Shen, X., Lin, X., Zhang, K. (eds) Encyclopedia of Wireless Networks. Springer, Cham. https://doi.org/10.1007/978-3-319-32903-1_72-1
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DOI: https://doi.org/10.1007/978-3-319-32903-1_72-1
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