Essays about: "Peak to Average Power Ratio"

Showing result 21 - 25 of 27 essays containing the words Peak to Average Power Ratio.

1. 21. 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

3. 22. An Investigation of Peak-to-Average Power Reduction in MIMO-OFDM Systems

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Yi Wang; linfeng Gu; [2009]
   Keywords : multiple input multiple output MIMO ; orthogonal frequency division multiplexing OFDM ; peak-to-average power ratio PAPR ; selected mapping SLM ; partial transmit sequence PTS . ;

   Abstract : Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) technology is one of the most attractive candidates for fourth generation (4G) mobile radio communication. It effectively combats the multipath fading channel and improves the bandwidth efficiency. READ MORE

4. 23. Comparison Between WiMAX and 3GPP LTE

   University essay from Blekinge Tekniska Högskola/Avdelningen för telekommunikationssystem

   Author : Syed Hamid Ali Shah; Mudasar Iqbal; Tassadaq Hussain; [2009]
   Keywords : 3GPP; LTE; OFDMA; SC-FDMA; SER; WiMAX;

   Abstract : Mobile communication technology evolved rapidly over the last few years due to increasing demands such as accessing Internet services on mobile phones with a better quality of the offered services. In order to fulfil this, wireless telecommunication industry worked hard and defined a new air interface for mobile communications which enhances the overall system performance by increasing the capacity of the system along with improving spectral efficiencies while reducing latencies. READ MORE

5. 24. A Study of Different Switched Mode Power Amplifiers for the Burst Mode Operation

   University essay from Institutionen för teknik och byggd miljö

   Author : Dristy Rahul Parveg; [2008]
   Keywords : High Efficient transmitter for 3G base station application; Burst mode operation; Switched mode power amplifier SMPA ;

   Abstract : Power-amplifier efficiency is a significant issue for the overall efficiency of most wireless system. Therefore, currently there are different kind of Switched mode power amplifiers are developed which are showing very high efficiency also at higher frequencies but all of these amplifiers are subjected to drive with the constant envelope signals. READ MORE

6. 25. Peak to Average Ratio Reduction in Wireless OFDM Communication Systems

   University essay from Blekinge Tekniska Högskola/Avdelningen för signalbehandling

   Author : KAMRAN HAIDER; [2006]
   Keywords : PAR; OFDM; Active-Set; Tone reservation; PSD constraint;

   Abstract : Future mobile communications systems reaching for ever increasing data rates require higher bandwidths than those typical used in today’s cellular systems. By going to higher bandwidth the (for low bandwidth) flat fading radio channel becomes frequency selective and time dispersive. READ MORE