LTE transceiver performance analysis in Uplink under various environmental conditions

Suárez, Marcela Alejandra; Zlydareva, Olga

doi:10.1109/icumt.2012.6459780

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…In Section 3, we investigate the physical layer performance of SC-FDM and OFDM, comparing Bit Error Ratio (BER) and Peak to Average Power Ratio (PAPR). BER for LTE SISO transmissions were already analysed in link-level simulations by [15,16,17] and semi-analytically by [18,19]. By means of our simulator, we reproduce these results and provide bounds to predict the performance of SC-FDM with respect to OFDM.…”

Section: Introductionmentioning

confidence: 94%

Exploring the physical layer frontiers of cellular uplink

Zöchmann

Schwarz

Pratschner

et al. 2016

J Wireless Com Network

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Communication systems in practice are subject to many technical/technological constraints and restrictions. Multiple input, multiple output (MIMO) processing in current wireless communications, as an example, mostly employs codebook-based pre-coding to save computational complexity at the transmitters and receivers. In such cases, closed form expressions for capacity or bit-error probability are often unattainable; effects of realistic signal processing algorithms on the performance of practical communication systems rather have to be studied in simulation environments. The Vienna LTE-A Uplink Simulator is a 3GPP LTE-A standard compliant MATLAB-based link level simulator that is publicly available under an academic use license, facilitating reproducible evaluations of signal processing algorithms and transceiver designs in wireless communications. This paper reviews research results that have been obtained by means of the Vienna LTE-A Uplink Simulator, highlights the effects of single-carrier frequency-division multiplexing (as the distinguishing feature to LTE-A downlink), extends known link adaptation concepts to uplink transmission, shows the implications of the uplink pilot pattern for gathering channel state information at the receiver and completes with possible future research directions.

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Section: Introductionmentioning

confidence: 94%

Exploring the physical layer frontiers of cellular uplink

Zöchmann

Schwarz

Pratschner

et al. 2016

J Wireless Com Network

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“…The reduced size of FFT engine is used in this work. The size of FFT in current transceivers is generally 512 to 2048 points in different channel bandwidth [16], but a 64 points FFT is selected in this research using the coherent sampling technique.…”

Section: Principle Of Proposed Algorithmmentioning

confidence: 99%

“…In SoC designs, these blocks are embedded in a single chip. In the example of the 4G LTE standard transceivers, which adopts an orthogonal frequency-division multiple access (OFDMA) scheme, a 2048-points FFT is used in 20MHz channel bandwidth [16]. Also, a 12-bit ADC with 65-MSPS sampling speed can be used.…”

Section: Introductionmentioning

confidence: 99%

A novel mixed-signal self-calibration technique for baseband filters in systems-on-chip mobile transceivers

Choi

Kim

2014

Proceedings of the 24th Edition of the Great Lakes Symposium on VLSI

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This paper presents a novel digitally-assisted automatic frequency tuning technique, and the self calibration technique is verified for a 130nm CMOS 4-th order biquad baseband low-pass filter case with 20MHz cut-off frequency, which satisfies the typical LTE receiver specifications. The proposed tuning method includes hardware reduction methods, coherent sampling, and magnitude calculator using 'alpha max plus beta min' algorithm for significant chip area reduction with negligible accuracy degradation. The cut-off frequency turns out to be tunable in the range of 16.2MHz to 24.4MHz, and the tuning error is less than 0.4% over the whole frequency tuning range. The estimated area consumption is 0.027mm 2 with 80% device density, and power dissipation is 0.16mW at 128MHz clock speed with a 1.2V supply voltage.

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“…Subsequently the elimination of CP information would be renewed in to parallel. After the conversion, the receiver changes the received frequency in the frequency domain using the DFT blocks; subcarriers are subsequently demapped [12]. Next to that, frequency domain equalization is performed.…”

Section: Receivermentioning

confidence: 99%

“…Next to that, frequency domain equalization is performed. In addition,the compensation for the frequency ratio equalizer is estimated using the MMSE (Minimum Mean Square Error), which is the most commonly available equalizer [12]. The use of IDFT equalizer signal is renovated in reformatted time domain which is again renovated in data of serial mode, finally in time domain detection is performed.…”

Section: Receivermentioning

confidence: 99%

Matched Filter Based Spectrum Sensing Technique for 4G Cellular Network

Kalhoro

Umrani

Khanzada

et al. 2019

Mehran Univ. res. j. eng. technol.

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Modern and fast developments of wireless technologies have directed to a great demand for resources. It can be seen in the study that the range of existing spectrum is not used effectively, therefore the frequency band should be observed to ensure proper usage and to have the information of primary or licensed user is very much essential. In this research work uplink of LTE (Long-Term Evolution) is observed through MF (Matched Filter) spectrum sensing technique of CR (Cognitive Radio) network. This method examines the existence of signals in minimum possible time, reduces the hindrances between secondary users, increases accurateness of sensing and provides finest choice of threshold. In Uplink the System model which is used is known as SC-FDMA (Single Carrier Frequency Division Multiple Access). Entire simulation/results are prepared in MATLAB environment. This study also provides graphical contrast of simulated and theoretical results of matched filter and energy detection technique.

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LTE transceiver performance analysis in Uplink under various environmental conditions

Cited by 11 publications

References 6 publications

Exploring the physical layer frontiers of cellular uplink

Exploring the physical layer frontiers of cellular uplink

A novel mixed-signal self-calibration technique for baseband filters in systems-on-chip mobile transceivers

Matched Filter Based Spectrum Sensing Technique for 4G Cellular Network

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