Search results for: Mingjie Zhuang
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Cat swarm optimization (CSO) is a kind of intelligent algorithm to mimic the behavior of cat, the binary CSO (BCSO) is a binary version. Based on the characteristic of BCSO's tracking mode and search mode to the global optimal solution, this paper proposes a new antenna selection algorithm applying BCSO. By the application of the arithmetic model of BCSO and the two kinds of patterns of behavior,...
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Coset coding is often used in the study of the physical layer security based on wiretap channel model. As almost every secure coding schemes using coset codes need a precise prediction of the channel state information (CSI), they are much more difficult to implement. To solve this problem, we propose a concatenated coding scheme combined of polar code and fountain code in wiretap channel model on...
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Today's mobile network traffic is growing in an exponential way, the current cellular system structure has been changed due to the lack of spectrum and the other factors, such as the difficulty of property coordination and the higher rent expense. In this paper, several interference management techniques in HetNet are studied, and the effects of the PCI program on the LTE coverage is analyzed. This...
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As a branch of WSN and an important part of the internet of things (IOT), the wireless body area network (WBAN) was originally created to improve the level of personal health care. And with the development of wireless technologies, the application of the WBAN has expanded to entertainment, leisure, military and other fields. So far, IEEE 802 Task Group has published a new IEEE 802.15.6 standard. The...
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This paper studies the channel capacity with respect to Cosinusoid Gaussian serial pulses of MPPM-TH-UWB communication systems under additive white Gaussian noise (AWGN) channel. It mainly makes comparison between optimum combined cosinusoid gaussian pulse and 2nd devative Gaussian pulse conforming to the FCC regulations. The simulation results demonstrate that the capacity is influenced by variance...
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In this paper, we derive an expression of the instantaneous signal-to noise ratio (SNR) for 4 transmit antennas and 2 receive antennas quasi-orthogonal space-time block codes (QSTBC) system with Jafarkhani code, which as a criteria of antenna selection in spatial correlated Rayleigh fading channels. Under the condition of the correlation matrix is known, both capacity performance and bit error performance...
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Paper takes the presence of the erroneous channel state information (CSI) into consideration. A three transmit antennas and one receive antenna Alamouti space-time scheme system {3,2; 1} with transmit antennas selection (TAS) is investigated. We assume that channel is an independent and flat Rayleigh fading channel and the system employs Binary Phase-Shift Keying (BPSK) modulation. Considering a solution...
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Considering the multiple input and multiple output (MIMO) communication systems under both cases of limited and unlimited power per transmitted antenna, the paper proposes an algorithm of optimal transmit power, referred to as water-filling algorithm. The principle of power allocation under limited power systems and no limited power ones are discussed, respectively. The principle of power water-filling...
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Starting from three transmit antennas and Nr receive antennas (3Tx-Nr Rx, generally defined as MIMO) system employing orthogonal space-time block coding (STBC-MIMO), the paper analyzes the solution procedure of complex orthogonal weighting channel matrix (OWCM) and decoupling method of the signals received for the resulting pre-coding system, and concludes an algorithm process using computer simulation...
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Space-time block coding (STBC) is a powerful transmit diversity scheme for multiple-input and multiple-output (MIMO) antennas systems. The M-ary phase-shift keying (MPSK) performance of STBC scheme is analyzed with the MIMO system in independent and quasi-static flat Rayleigh fading channels. In this paper, we present the bit-error rate (BER) of STBC system with Chernoff upper bound and also mathematic...
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Diversity techniques are known to reduce the deleterious effect of fading. Compared with maximum ratio combining (MRC) that equal gain combining (EGC) requires a much simpler implementation and has a better transmission performance. However, a closed-form expression for the bit error rate (BER) of EGC diversity system is difficult to be obtained. Normal approach to assess the BER performance of the...
