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This article presents new insights on the out-of-band spectral re-growth due to HPA nonlinearities when MIMO OFDM signals are transmitted over multiple relay channels.
Expressions for the power spectral density of MIMO OFDM signals are derived over multiple relay channels, and the cumulative effects of HPA on the spectrum of the transmitted signals are estimated.
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In this article, we characterize the out-of-band spectral broadening introduced by HPA when MIMO OFDM signals are transmitted over multiple relaying channels.
In [15], approximations for the channel capacity of opportunistic cooperative multiple relay networks over Rayleigh fading channels under optimal simultaneous power and rate (OSPR), optimal rate with constant power (ORCP), and truncated channel inversion with fixed rate (TCIFR) were investigated.
In [10], a cooperative relay transmission strategy was proposed over multiple potential relays.
Multiple relay nodes create a virtual multiple-input multiple-output (MIMO) environment at the relay layer.
SOP of an underlay cognitive decode-and-forward relay network over independent but not necessarily identical distributed (i.n.i.d) Nakagami-m fading channels was investigated, and optimal relay selection (ORS) and suboptimal relay selection (SRS) schemes, and multiple relay combining scheme were considered in [16].
A relay network with multiple relay each having multiple antennas is considered.
Multihop relay channels use multiple relay stages, each with multiple relay nodes, to facilitate communication between a source and destination.
Single and multiple relay selection schemes were investigated.
An adaptive relaying algorithm with multiple relay group setting may be suitable protection coordination solution.
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