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In this correspondence, we propose an analog network coding scheme with differential modulation (ANC-DM) using amplify-and-forward protocol for bidirectional relay networks when neither the source nodes nor the relay knows the channel state information (CSI). The performance of the proposed ANC-DM scheme is analyzed and a simple asymptotic bit error rate (BER) expression is derived. The analytical...
For a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, time-varying multipath fading of channel destroys the orthogonality among subcarriers and leads to serious intercarrier interference (ICI). The system performance degrades more severely as normalized Doppler frequency increases. In order to mitigate the effect of time-varying fading, a low-complexity...
Interference among multiple base stations that co-exist in the same location limits the capacity of wireless networks. In this paper, we propose a nonlinear multi-user MIMO cooperative downlink transmission scheme. The algorithm eliminates the interference and achieves symbol error rate (SER) fairness among different users. To eliminate the interference, Tomlinson Harashima precoding (THP) is used...
Space-time turbo trellis coding (STTuTC) has been shown to provide a significant performance improvement over comparable space-time trellis coding (STTC) schemes due to an increase in coding gain. In conventional STTuTC schemes equal power is allocated to each transmit antenna. From information theory we know that if partial or full channel state information (CSI) is available at the transmitter,...
Multiple antenna systems have potential to achieve a high capacity compared to a single antenna system in a Rayleigh fading environment. Layered space time (LST) architecture can attain a tight lower bound on the MIMO channel capacity. In (S. Marinkovic, et al., 2001) it is shown that for LST system, the iterative parallel interference canceller with decision statistics combiner (PIC-DSC) can achieve...
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