A Field Trial of F-OFDM Toward 5G
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© 2016 IEEE. To improve the spectrum utilization and enable flexible waveform for 5G, a new waveform framework, named filtered OFDM (f-OFDM), has been introduced in previous study. In the past year, f-OFDM was verified for the first-time in a 5G joint trial by NTT DOCOMO and Huawei in Chengdu, China. Here in this paper, more details on f-OFDM including the filter design and the implementation are discussed, together with substantial prototyping results. The field test results suggest that f-OFDM provides a reduced spectrum leakage and thus enhanced spectrum efficiency over the conventional OFDM which is used in 4G LTE networks. The capability of supporting multiple asynchronous subband transmissions of filtered-OFDM are also verified, where the performance loss resulting from neighboring but asynchronous transmissions are confirmed to be negligible.
author list (cited authors)
Wu, D., Zhang, X. i., Qiu, J., Gu, L., Saito, Y., Benjebbour, A., & Kishiyama, Y.