This article presents a brief survey of Digital down Converter (DDC) architecture and its extensive applications. The distinctive feature of the DDC architecture is its frequency translation from real data signal at an intermediate frequency to a complex baseband signal at zero frequency. The architecture of DDC comprises of Numerically Controlled Oscillator (NCO) and decimation filters. The components of ultra efficient DDC architecture have been implemented in Field Programmable Gate Array (FPGA) device. This down converter provides high malleability, customizability and bearable cost. Due to its amenities, digital down converter was utterly studied and applied in many wireless communication technologies.
As of now, the 5G attempts to address the current OFDM-based LTE issues, for example, Bit Error Rate (BER), Spectral Loss, Signal to Noise Ratio (SNR), Symbol Error Rate (SER) and high peak-to-average power ratio (PAPR). Universal-filtered multi-carrier (UFMC) method can be measured as an up-and-comer waveform for 5G correspondences since it gives advantages by minimizing the Inter Symbol Interference (ISI) and Inter Carrier Interference (ICI) reasonable for low-idleness situations. There are various filters for designing an UFMC which suits for a 5G application. This survey is carried out because of the Industrial 4.0 revolutionary is going on at a higher phase for which Machine to Machine (M2M) communication is widely required for suitability and reliability leading to the 5G requirement for high speed data transfer with appropriate filter design.
This paper presents the survey of the design of Low Noise Amplifier (LNA) for different wireless applications. This paper focuses diverse design techniques and new architectures in the design and implementation of low noise amplifier such as self-biased, forward bias, common source cascade, Cascode, body bias and LNA based on dual resonance techniques. These design methodologies are serving to reduce the power consumption and enhance the performance such as gain and noise factor in wireless applications. In this paper, recent design methodologies of different LNA is meticulously analyzed and new design method will be proposed to enhance the performance of the LNA.
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