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In non-static scenarios where Dynamic Spectrum Management (DSM) Level 2 is employed, an optimal power allocation can become invalid e.g. due to a joining user and thus has to be recomputed. To not unnecessarily interrupt service, the spectra should be updated successively as individual users start a new session. If not done carefully, this results in sub-optimal intermediate joint power allocations...
In this paper, Discrete Fourier Transform (DFT) precoded Orthogonal Frequency Division Multiple Access (OFDMA) with interleaved subcarrier allocation per user is considered which is denoted as Interleaved Frequency Division Multiple Access (IFDMA). In order to estimate the channel for IFDMA, in general, each subcarrier of an IFDMA symbol is used for pilot transmission to fulfill the sampling theorem...
In this paper, we introduce non-regenerative multi-way relaying. A half-duplex multi-antenna relay station (RS) assists multiple nodes which want to communicate to each other. Each node has a message and wants to decode the messages from all other nodes. The number of communication phases is equal to the number of nodes, N, such that when N = 2, we have the well known two-way relaying. In the first...
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