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Since the out-of-band (OOB) power suppression of Orthogonal Frequency Division Multiplexing (OFDM) has been an essential topic for various wireless communication applications such as Cognitive Radio (CR) systems, in this paper, two existing precoding techniques are investigated. Then a combined approach which properly adjusts the matched code rates of these(More)
Orthogonal frequency division multiplexing (OFDM)-based cognitive radio (CR) systems suffer from the large out-of-band emission (OOBE) that may interfere with other users. Since most existing OFDM OOBE suppression schemes are derived on the base of an original OFDM system without any other scheme, we first propose a generalized OFDM framework that is(More)
In this paper, we study carrier frequency offset estimation and correction for uplink multi-user MIMO (UL MU-MIMO) for Wi-Fi, where distributed stations (STAs) send multiple data streams to a common access point (AP) with multiple receive antennas. We provide a description of the proposed system, and propose a three-step approach using a joint phase(More)
In this paper, we compare three filter bank multicarrier (FBMC) techniques, i.e., Orthogonal Frequency Division Multiplexing (OFDM), OFDM-Offset Quadrature Amplitude Modulation (OFDM-OQAM) and wavelet packet modulation (WPM), based on multiple criteria, including bandwidth efficiency, computational complexity, latency, out-of-band emission, peak-to-average(More)