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Researching on the relationships among different multiple weighted type fractional Fourier transform (multi-WFRFT) schemes, we in this paper provide the modulation order relation of different multi-WFRFT in theory. Moreover, we also prove that the two matrix spaces (i.e., 4-WFRFT and multi-WFRFT) are equivalent. To apply multi-WFRFT into the wireless communication, we design the implementation structure...
In this paper, we analysis the three communication systems, orthogonal frequency division multiplexing (OFDM) system, single carrier modulation (SCM) system and hybrid carrier modulation (HCM) system under doubly selective (DS) channels. The implement structures of three systems have been derived. We then explore the property of SCM and OFDM systems. Furthermore, we, through numerical simulations,...
A distributed space-time-frequency (STF) coding scheme is proposed for cooperative OFDM (C-OFDM) systems with three terminals over quasi-static frequency-selective Rayleigh fading channels. The outage probability performance is derived and its tight closed-form lower bound is presented. Asymptotic analysis indicates that the proposed scheme can achieve both spatial and multipath (frequency) diversity...
In this paper, a new synchronization receiver architecture for continuous phase modulation (CPM) and relevant carrier phase and symbol timing recovery methods based on frame synchronization and fractional-spaced frequency domain equalization (FDE) are proposed. With frame synchronization and fractional-spaced FDE, frequency selective fading can be equalized for the up-sampled CPM signal. At the same...
In this paper, a new receiver architecture with frequency-domain equalization (FDE) for continuous phase modulation (CPM) is proposed. With fractional-spaced FDE for up-sampled CPM signal, receivers designed for additive white Gaussian noise (AWGN) channel can be used for demodulating and detecting the CPM signal. Low complexity fractional-spaced channel estimation and FDE algorithms, which can estimate...
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