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In this paper, an analytical framework is developed for the performance analysis of three transmit antenna selection (TAS) strategies for dual-hop multiple-input multiple-output channel-assisted amplify-and-forward (CA-AF) relay networks over Rayleigh fading. The cumulative distribution function of a lower bound of the end-to-end signal-to-noise ratio (SNR) of the optimal TAS strategy is derived and...
The performance of a multi-hop amplify-and-forward relay network is analyzed. The source and destination terminals are equipped with multiple-antennas and the relays with single-antennas. The cumulative distribution function and the moment generating function of two tight upper bounds of the end-to-end signal-to-noise ratio are derived. The lower bounds for the outage probability and the average symbol...
In this paper, we analyze the performance of dual-hop channel state information (CSI)-assisted amplify-and-forward (AF) cooperative networks using orthogonal space-time block codes (OSTBCs) over independent but not identically distributed Nakagami-m fading channels. Specifically, we present closed-form expressions of the outage probability (OP) and the symbol error probability (SEP). The analytical...
In this paper we introduced a multi-level threshold opportunistic transmission scheme in multiuser MIMO (MU-MIMO) downlink with reduced feedback. In the strategy two thresholds are employed. The tight one is used for feedback load reduction, and the loose one is to guarantee low outage probability. Mobile station (MS) whose channel gain exceeds one of the thresholds is eligible for feeding back information...
This paper proposes a novel sub-optimal transmit antenna selection (TAS) strategy for non-regenerative half-duplex MIMO relay channel. While antenna selection is a sub-optimal form of beamforming, it still enjoys the advantage of tractable optimization and low feedback overhead. The diversity order of this proposed strategy is derived to prove that it can achieve the full diversity order as the optimal...
In this paper we introduced an opportunistic transmission scheme in MU-MIMO downlink with reduced feedback and mode adaptation. In this strategy both base station (BS) and mobile station (MS) are equipped with multiple antennas. Threshold scheme is employed. Only eligible MS whose channel quality exceeds a preset threshold would select transmission mode, including beamforming (BF) and spatial multiplexing...
We provide a systematic study of adaptive modulation schemes in multiple-input-multiple-output (MIMO) orthogonal space-time block code (OSTBC) systems. Closed-form expressions of system performance, such as average spectral efficiency, bit error ratio (BER), and outage probability, are obtained and confirmed by Monte Carlo simulations. Provided the closed-form expressions, the optimal signal-to-noise...
Cooperative MIMO network consists of multiple relay nodes each equipped with single antennas. Virtual MIMO is examined with multi-relay cooperative communication. Performances of distributed space-time block code (DSTBC) in cooperative MIMO are analyzed and compared with general cooperative diversity protocols. Outage probability of DSTBC and pair-wise error probability (PEP) of virtual MIMO with...
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