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This paper investigates an iterative algorithm to control weighting coefficients of transmit/receive spatial filters in a frequency-division duplex (FDD) based eigen-mode space division multiplexing (E-SDM/FDD) system. In this system, weighting matrices of transmit/receive spatial filters are optimized using an iterative algorithm that minimizes the mean square error (MSE) of the virtual received...
Mobile WiMAX is a broadband wireless access based on OFDM/OFDMA technology which employs Adaptive Modulation and Coding (AMC) scheme to attain higher data rates. In this paper, a selection strategy is incorporated with GNU Radio for the determination of Modulation and Coding Scheme (MCS) level dependent upon channel estimation parameter over AWGN and Rayleigh fading channels. MCS level choice has...
An OFDM based WiMAX physical layer combining with Continuously Variable Slope Delta (CVSD) speech coding strategy has been implemented utilizing GNU Radio and USRP N210. CVSD vocoder is a non linear sampled data feedback framework which recognizes a band limited analog signal and converts it into binary form for transmission through a digital channel. The binary signal is decoded into a nearby estimate...
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