Title :
Waveform Contenders for 5G - Suitability for Short Packet and Low Latency Transmissions
Author :
Schaich, Frank ; Wild, Thorsten ; Yejian Chen
Author_Institution :
Alcatel-Lucent AG Bell Labs., Stuttgart, Germany
Abstract :
In this paper we compare three candidate multicarrier waveforms for the air interface of 5G: filtered CP-OFDM - the choice for 4G, FBMC - heavily discussed in recent years, and Universal Filtered Multi-Carrier (UFMC) - a new contender making its appearance recently. We judge their time-frequency efficiency when transmitting very small bursts (e.g. for machine to machine communications) and under very tight response time requirements (e.g. for vehicle to vehicle communications). While FBMC is very efficient when transmitting long sequences, it suffers when having to transmit short bursts/frames. Due to the cyclic prefix and wide frequency guards, OFDM is rather inefficient. UFMC proofs to be the best choice, here, outperforming OFDM by about 10% in any case and FBMC in case of very short packets while performing similar for long sequences.
Keywords :
4G mobile communication; 5G mobile communication; OFDM modulation; channel bank filters; time-frequency analysis; 4G communication; 5G wireless air interface; FBMC; UFMC; cyclic prefix; filter bank multicarrier; filtered CP-OFDM; low latency transmission; multicarrier waveform contender; response time requirement; short packet transmission; time-frequency efficiency; universal filtered multicarrier transmission; wide frequency guard; Communication channels; Filter banks; Filtering theory; OFDM; Time-domain analysis; Time-frequency analysis;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2014 IEEE 79th
Conference_Location :
Seoul
DOI :
10.1109/VTCSpring.2014.7023145
