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UART (Universal Asynchronous Receiver Transmitter) is a kind of serial communication protocol; mostly used for short-distance, low speed, low-cost data exchange between computer and peripherals. During the actual industrial production, sometimes we do not need the full functionality of UART, but simply integrate its core part. UART includes three kernel modules which are the baud rate generator, receiver...
This paper presents the design and implementation of a complete communication system using the GMSK modulation scheme. The hardware is described in VHDL and implemented on Altera FPGA. Additionally, each block used to perform the implementation is completely described accomplishing all the requirements of this kind of modulation. Mueller & Müller algorithm is also performed to ensure timing synchronization...
In this paper, we present the design and implementation of a PLC (Power-Line Communication) Modem based on Orthogonal Frequency Division Multiplexing (OFDM). The PLC device implements OFDM in both transmitter and receiver using VHDL programming. The OFDM processor is synthesized in a Field Programmable Gate Array (FPGA) that acts as a Core Processor in the PLC Modem. Furthermore, the prototype includes...
The work mainly concentrates to create a remote controlled environment to address every device with a unique ID. To address this issue we are in need of a protocol. It is the RC5 protocol. This was to implement and demonstrate this RC5 protocol and use it to control three to four devices. We have chosen to use FPGA to process the information. In this work we implemented RC5 protocol and used this...
Frequency offset is of the main problems in Orthogonal Frequency Division Multiplexing (OFDM) system. A frequency offset between the local oscillator at the transmitter and receiver causes frequency shift in the signal, while in time-varying channel, it can cause a spread of frequency shift known as the Doppler spread. This leads to loss in the orthogonality between subcarriers and results in intercarrier...
This paper introduces the use of combined decimal sequences in a code division multiple access (CDMA) system. It presents the design and implementation of a DS-CDMA base-band module on an FPGA. The designed transceiver employs a combined D-sequence generator as a spreader/despreader unit. The transceiver have been designed using VHDL design entry method and simulated using Mentor Graphics FPGA Adv...
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