Essays about: "WCDMA transmitter"

Showing result 1 - 5 of 7 essays containing the words WCDMA transmitter.

  1. 1. Low-Power Low-Noise IQ Modulator Designs in 90nm CMOS for GSM/EDGE/WCDMA/LTE

    University essay from Institutionen för systemteknik

    Author : Mattias Johansson; Jonas Ehrs; [2010]
    Keywords : RF; ASIC; Analog Integrated Circuit; IQ Modulator; IQM; CMOS; 90nm; Predistortion; Mixer; Envelope Tracking; Direct Conversion;

    Abstract : The current consumption of the IQ modulator is a significant part of the totalcurrent consumption of a mobile transmitter platform and reducing it is of greatinterest. Also, as the WCDMA/LTE standards specifies full duplex transmissionsand Tx and Rx are most often using the same antenna, it is crucial to have asolution with low noise generation. READ MORE

  3. 2. Interference Cancellation in a Full duplex System

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Thomas Ahlström; Claes Bengtsson; [2008]
    Keywords : Technology and Engineering;

    Abstract : In a full duplex system as WCDMA a mobile phone transmits and receives at the same time, but at different frequencies. The transmitted signal will cause interference in the receiver which must be suppressed to not get degraded sensitivity in the receiver. READ MORE

  4. 3. Digital Power Detector for WCDMA Transmitter

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Robert Carlzén; Robert Nilsson; [2008]
    Keywords : Technology and Engineering;

    Abstract : A 3G mobile phone must have the ability to control its output power with high precision. A power detector is used to measure the actual power outputted by the power amplifier to the antenna. With higher data rates the traditional implementations with peak detectors have become very difficult to use, which is why true RMS detectors are needed. READ MORE

  5. 4. Study Comparison of WCDMA and OFDM

    University essay from Blekinge Tekniska Högskola/Avdelningen för telekommunikationssystem

    Author : Moyamer Chowdhury; Aminul Alam; [2007]
    Keywords : TDMA; FDM; CDMA; WCDMA; OFDM;

    Abstract : Wideband Code Division Multiple Access (WCDMA) is one of the main technologies for the implementation of third-generation (3G) cellular systems. It is based on radio access technique proposed by ETSI Alpha group and the specifications was finalised 1999. READ MORE

  6. 5. Study Comparison of WCDMA and OFDM

    University essay from Blekinge Tekniska Högskola/Avdelningen för telekommunikationssystem

    Author : Moyamer Chowdhury; Aminul Alam; [2007]
    Keywords : TDMA; FDM; CDMA; WCDMA; OFDM;

    Abstract : Wideband Code Division Multiple Access (WCDMA) is one of the main technologies for the implementation of third-generation (3G) cellular systems. It is based on radio access technique proposed by ETSI Alpha group and the specifications was finalised 1999. READ MORE