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We propose a multi-timescale interference mitigation scheme for massive MIMO cellular networks. The MIMO precoder at each base station (BS) is partitioned into an inner precoder and an outer precoder. The inner precoder controls the intra-cell interference and is adaptive to local channel state information (CSI) at each BS (CSIT). The outer precoder controls the inter-cell interference and is adaptive...
We propose a hierarchical interference mitigation scheme for massive MIMO cellular networks. The MIMO precoder at each base station (BS) is partitioned into an inner precoder and an outer precoder. The inner precoder controls the intra-cell interference and is adaptive to local channel state information (CSI) at each BS (CSIT). The outer precoder controls the inter-cell interference and is adaptive...
Accurate range estimation is a fundamental and crucial part of any position estimation technique. State-of-the-art systems exploiting OFDM modulated signals use narrowband block-type synchronization symbols or a scattered pilot structure. These synchronization symbols are mainly designed to allow communication only. Their timing estimation performance is not sufficient for ranging and especially for...
This paper proposes a unit power based subcarrier allocation algorithm with the aim of minimizing the total transmit power in the downlink multiuser MIMO-OFDM systems, and compares its performance and complexity with Zhang's algorithm and extended Correlation-based algorithm (ECBA). By applying Singular Value Decomposition (SVD), the inter-antenna interference (IAI) and multiple user interference...
In this paper, we propose a robust STBC transmission scheme to combat the timing synchronization errors over frequency-selective multiple-access channels. First, the equivalent channel model in the presence of timing synchronization errors is derived and we find that the synchronization errors result in an equivalent channel model with larger number of correlated channel taps. Based on this correlated...
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