Essays about: "Advantage of digital modulation"

Found 5 essays containing the words Advantage of digital modulation.

  1. 1. Implementing Linear Predictive Coding based on a statistical model for LTE fronthaul

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Ghassan Nakkoul; Mohammad Shohag Hassan Kaikobad; [2016]
    Keywords : Entropy; LTE fronthaul; RRH; BBU; C-RAN; Quantization; LTE downlink; Cyclic prefix; LPC; EVM; OFDM; Linear predicting coding; LTE; Technology and Engineering;

    Abstract : This thesis studies the application of Linear Predictive coding (LPC) in the downlink of Long Term Evolution (LTE) fronthaul, which comprises of BBU and RRH. This can act as an additional module in the existing system. Today, the transmission of a single complex sample from the BBU to the RRH consumes 30 bits. READ MORE

  3. 2. The influence of the dispersionmap on optical OFDM transmissions

    University essay from Institutet för rymdfysik, Uppsalaavdelningen

    Author : Kamyar Forozesh; [2010]
    Keywords : OFDM; fiber; optic; dispersion; optical transmission;

    Abstract : Fiber-optic networks are an integral part of todays digital communication system. In these networks, distances of typically 400 km to 6000 km are linked together, and information is transfered at extremely high data rates. READ MORE

  4. 3. Power Efficient Digital Decimation Filters for Sigma-Delta ADCs

    University essay from Institutionen för systemteknik

    Author : Love Cederström; [2009]
    Keywords : Decimation Filter; Sigma-Delta; Low-Power; Low-Frequency; CIC;

    Abstract : The development of integrated circuit technology seen in the last decades has enabled a large variety of battery operated equipment to emerge, such as smallsensors and medical implants. These applications often has low requirements on sampling frequency but require a very low power consumption to achieve a longbattery life. READ MORE

  5. 4. Direct Digital Pulse Width Modulation for Class D Amplifiers

    University essay from Institutionen för systemteknik

    Author : Stefan Stark; [2007]
    Keywords : PWM; Class-D; delay-line; direct digital modulation; delay element;

    Abstract : Class D amplifiers are becoming increasingly popular in audio devices. The strongest reason is the high efficiency which makes it advantageous for portable battery-driven products. Infineon Technologies is developing products in this area, and has recently filed a patent application regarding an implementation of a part of the class D amplifier. READ MORE

  6. 5. Ultra Wide Band Sigma-Delta modulator in CMOS090

    University essay from Institutionen för systemteknik

    Author : Fredrik Jonsson; [2004]
    Keywords : Electronics; Sigma-Delta modulator; Ultra Wide Band; UWB; Excess feedback delay; CMOS090; Elektronik;

    Abstract : Today the frequency spectrum is full of wireless standards. The most common technique being used is the frequency modulation. To take advantage of this and the technology improvement a new wireless communication standard is being developed. This standard is using a low power impulse modulation method, allowing it to overlap with other standards. READ MORE