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This paper deals with digital beamforming in the receive mode for a 4-element linear array, spaced at predefined regular intervals. Multiple, simultaneous, directive receive beams are formed by digitizing the outputs of the receiving array elements and forming beams by means of a digital processor. The digital processor combines the input signal at each element with its respective weighting co-efficients,...
Recently, we proposed a code-modulated multipath receiver front-end to reduce the number of analog-to-digital converters (ADCs) behind antenna elements and realize significant area, cost, and power reduction. More specifically, code division multiplexing was implemented at the analog front-end for path combining into a single ADC. At the digital baseband, the reverse process was applied to recover...
This paper is focus on the realization of signal beam forming (DBF) for base band signal through band-pass sampling, I / Q digital branch decomposition and digital filtering. In order to make more rational use of modern electronic tools, make full use of DSP's computing power, give prominence to FPGA's strong logic processing capacity and fast speed, a combination of both will be used. In the FPGA,...
In multiple-input multiple-output (MIMO) systems, the use of many radio frequency (RF) and analog-to-digital converter (ADC) chains at the receiver is costly. Analog beamformers operating in the RF domain can reduce the number of antenna signals to a feasible number of baseband channels. Subsequently, digital beamforming is used to capture the desired user signal. In this paper, we consider the design...
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