SUMMARYA synthesis method is presented for the class of low-pass prototype filters having an equiripple passband response with a single transmission zero at infinity and the remainder at a finite real frequency. To synthesize the network, the even mode or the odd mode is obtained directly using the alternating pole technique and little accuracy is lost for networks up to degree 19. Tables of element values for commonly used specifications are included. Finally, the practical advantages of this prototype when used to design certain classes of filters are discussed.
Two coding techniques are adopted in this paper to improve the performance of Space Time Block Codes-Spatial Modulation (STBC-SM). The two adopted coding techniques are the turbo-coding technique and the convolutional-coding technique over block fading channel. The signals used in the two coded systems are assumed to be modulated using BPSK and QPSK. The MATLAB simulation results show that at a BER of 10.5, the turbo-coded and convolutional-coded systems can provide about 3-4.5 dB and 2.7-3.8 dB coding gains respectively compared with the uncoded system.
This paper investigates performance of the medium access control (MAC) protocol in MPR/IEEE 802.11n over fiber network. A closed-form expression for the maximum throughput is derived. Based on the presented model effects of the number of antennas used by remote antenna units (RAUs), fiber propagation delay and network size on the performance of MAC is analyzed and illustrated.The achieved results show that this system is considerably capable to increase throughput more than the physical layer (PHY) data rate. All results are presented for two state of channels; ideal and error-prone.
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