Results 161 to 170 of about 6,838 (186)
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A multi-band Rel9 WCDMA/HSDPA/TDD LTE and FDD LTE transceiver with envelope tracking
ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC), 2014This paper presents a transceiver capable of supporting 2G/3G/4G LTE FDD bands 1-20 and TDD bands 34- 41. The chip includes main and diversity receivers, direct conversion transmitter, internal closed loop power control, antenna tuning and Envelope Tracking DAC. It supports Rel 9 dual band dual carrier HSDPA using a second Receive PLL. The Receiver has
S. Tadjpour +35 more
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Design of FDD/TDD dual mode power amplifier for LTE application
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2012LTE technology supports flexible carrier bandwidths, from below 5MHz up to 20MHz and also supports both FDD (Frequency Division Duplex) and TDD (Time Division Duplex) modulation schemes. Ten paired and four unpaired spectrum bands have so far been identified by 3GPP for LTE and there are more bands to come.
Peng Yanjun +3 more
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Hairpin line bandpass filter for 1.8 GHz FDD-LTE eNodeB receiver
2017 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET), 2017This paper presents a bandpass filter designed to passes the required uplink frequency in the band-3 for eNodeB LTE (1.710–1.785 GHz). The filter is designed using hairpin line method, 0.01 dB ripple Chebyshev response, and Duroid RT- 5880 as the substrate to result a bandwidth of 75 MHz.
Muhammad Fadhil +2 more
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Investigation on Multi-Antenna Technologies Evolution from FDD LTE to NR FDD
2021 IEEE 20th International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom), 2021Jinge Guo +5 more
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Performance Evaluation with Control Channel on the Coexistence Scenario of TD-LTE and LTE-FDD
2013The coexistence performance with control channel when TD-LTE and LTE-FDD systems coexist at the adjacent frequency band within the same geographical area is investigated. A simple mathematical model mapping from control channel performance to data channel throughput is employed to estimate system performance when considering the impact of the adjacent ...
Yinshan Liu +4 more
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Performance analysis of intercell interference coordination in downlink FDD-LTE system
2012 7th International Conference on Telecommunication Systems, Services, and Applications (TSSA), 2012Frequency reuse schemes used in LTE network planning are optimized using inter-cell interference coordination with soft frequency reuse. The parameters needed in planning LTE network is derived from the process of dimensioning, including capacity and coverage.
I. Setiawan, null Iskandar
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Qualifying CP length for LTE FDD downlink channel with small delay dispersion
2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2015In this paper, the earlier developed error floor model for peak performance estimation of OFDM transmission over multipath channel with small delay dispersion is enhanced by exploiting the model’s feature of enabling application of arbitrary cyclic prefix length, by varying the balance between the counts of advanced and delayed echoes with respect to ...
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Mobile Communications LTE FDD System of Performance Index and Key Technology
2012In order to put itself in an advantageous position in the future mobile communication technologies competitive environment, to meet the user’s multiplication needs and to deal with the market challenge, 3GPP has adopted the long term evolution (LTE) about the project work at the end of 2004.
Chen Gang, Chen Qiang
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A Survey on Self-Interference Cancellation in Mobile LTE-A/5G FDD Transceivers
IEEE Transactions on Circuits and Systems II: Express Briefs, 2021Christian Motz +2 more
exaly
Alternative duplexing for LTE FDD using the theory of characteristic modes
2015In this paper, we are investigating an alternative architecture for the RF transceiver of mobile phones which is capable of supporting the latest features and bands used for LTE. In this work, the duplex filter is replaced by equipping the Rx and Tx branch of the front-end with dedicated antennas.
Tatomirescu, Alexandru +1 more
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