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Multiple-input multiple-output (MIMO) is a promising technology to enhance capacity and robustness of the link by the presence of multiple transmit antennas and multiple receive antennas in the communication link. The use of multiple antennas at both ends of a wireless link promises significant improvements in terms of spectral efficiency and link reliability. The HF system adopted MIMO and OFDM(Orthogonal...
We consider the joint exploitation of coding and diversity techniques to achieve efficient, reliable wireless transmission. The system of interest comprises a powerful non-binary low-density parity-check (LDPC) code that will be soft-decoded to supply strong error protection, a quadratic amplitude modulator (QAM) that directly takes in the non-binary LDPC symbols and will be soft-demodulated, and...
Wireless communication using multiple-input multiple-output (MIMO) systems improves throughput and enhances reliability for a given total transmit power. Achieving a higher data rate in MIMO systems requires utilizing an effective space-time coding and modulation scheme. The appropriate algorithm to use for a system will depend on parameters such as the number of transmit/receive antennas, target...
This paper presents transmission parameters of Unmanned Vehicle Robot (UVR) systems based on IEEE802.16e (M-WiMAX) systems. UVR requires higher uplink multimedia data rate, which is different from commercial M-WiMAX system. This paper designes some parameters satisfying the UVR system requirements and demonstrates performance evaluation based on the parameters. For the transmission parameters, the...
Differential modulation has recently been proposed for wireless relay networks. However, it suffers from a 3-dB performance loss as in point-to-point communication systems. In this paper, we propose a new differential modulation scheme, which is referred as generalized differential modulation (GDM) for wireless networks with amplify-and-forward relaying. In the proposed scheme, each frame transmitted...
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