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In this paper, we consider a worst-case based robust beam forming approach for two-way relay networks that consist of two transceivers and multiple relays. Both the transceiver-to relay channels are assumed to have norm-bounded channel estimation errors. The worst case of the problem in a norm defined error set is optimized to guarantee the performance of the actual case. The resultant beam forming...
In filter-and-forward (FF) based two-phase two-way relay networks, each transmission for data exchange between two transceivers consists of only two phases. In the first phase, both transceivers transmit their data simultaneously to the relays. The received signal of each relay is filtered with a finite impulse response (FIR) filter to compensate for the frequency selectivity of the channels, and...
In filter-and-forward (FF) based two-way relay networks, each transmission for data exchange between two transceivers consists of only two time slots (or phases). In the first time slot, both transceivers transmit their data simultaneously to the relays. The received signal of each relay is filtered using a finite impulse response (FIR) filter to compensate for the frequency selectivity of the channels,...
A new approach to distributed cooperative beamforming in two-way half-duplex relay networks with frequency selective channels is proposed. In our scheme, two transceivers simultaneously transmit the signals they wish to exchange to the relays. The relay received signals are the sum of the channel-convoluted versions of the transmitted signals. Each relay retransmits a filtered version of its received...
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