Publicou 12 edições por ano
ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009
Indexed in
EFFECT OF HPA BACK-OFF AND FILTER LENGTH ON 256QAM
RESUMO
The error vector magnitude (EVM) measure the performance of communication system. It is also known as relative constellation error (RCE). This paper is going to perform modulation accuracy along with spectrum emission mask and flatness on IEEE802.11ac waveform in terms of RMS EVM. Here a communication system model is designed with various parameters to perform simulation. 5 VHT (very high throughput) packets are used for transmission. Measurement of RMS EVM performed by varying filter length and high power amplifier (HPA) back-off for 256-QAM (256-quadrature amplitude modulation). This paper also shows the RMS EVM for 64QAM, 128QAM, 256QAM, and 512QAM. Kaiser window with design parameter 0.5 implemented for the same.
-
Cisco, (2014) 802.11ac: The Fifth Generation of Wi-Fi Technical White Paper, Http://Www.Cisco.Com/C/En/Us/Products/Collateral/Wireless/Aironet-3600-Series/White_Paper_C11-713103.Html, pp. 1-25.
-
IEEE Standards Association, (2013) 802.11ac Standard Amendment 4.
-
Zhang, L., Zhou, J., Yu, Z., Zhou, X., and Zhang, R., (2016) Design of the high-performance RF transmitter for IEEE 802.11ac system, IEEE International Conference on Ubiquitous Wireless Broadband, ICUWB.
-
Li, H. and Ye, W., (2015) Study of Digital Modulation Signal Error Vector Magnitude Based on Vector Signal Analyzer, Proceedings - 8th International Symposium on Computational Intelligence and Design, ISCID 2015, 2, pp. 100-103.
-
Ward, L., (2012) 802.11ac Technology Introduction White Paper.
-
Fu, Z., Anttila, L., Abdelaziz, M., Valkama, M., and Wyglinski, A.M. (2015) Frequency-selective digital predistortion for unwanted emission reduction, IEEE Trans. Commun, 63(1), pp.254-267.
-
Abu-alhiga, R. and Haas, H., (2009) Subcarrier-index modulation OFDM, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC.
-
El-Moursy, M.A. and Abdellatif, A.G., (2007) High-performance low-power digital linear interpolation filter, Proceedings of the International Conference on Microelectronics, ICM, pp. 57-60.
-
Kaiser, J.F., (1974) Nonrecursive digital filter design using the I0-sinh window function, Proc IEEE Int Symp Circuits Syst, 3, pp. 20-23.
-
Oppenheim, A.V., Schafer, R.W., and Buck, J.R., (1999) Discrete-Time Signal Processing Solutions, Discrete Time Signals and Systems. p. 870.
-
Kaiser, J. and Schafer, R., (2004) On the use of the I<inf>0</inf>-sinh window for spectrum analysis, IEEE Trans. Acoust., 28(1), pp. 105-107.
-
Jeong, M., Lee, O., and Kim, S.W., (2017) WLAN transceiver for 802.11 a/b/g/n/ac with integrated power amplifier and harmonic LO frequency VCO, Proceedings-International SoC Design Conference, ISOCC 2017, pp. 81-82.
-
Kang, S., Baek, D., and Hong, S., (2017) A 5-GHz WLAN RF CMOS Power Amplifier with a Parallel-Cascoded Configuration and an Active Feedback Linearizer, IEEE Trans. Microw. Theory Tech., 65(9), pp. 3230-3244.
-
Joo, T., Koo, B., and Hong, S., (2013) A WLAN RF CMOS PA with adaptive power cells, Digest of Papers-IEEE Radio Frequency Integrated Circuits Symposium, pp. 345-348.
-
Lu, C., Pham, A.V.H., Shaw, M., and Saint, C., (2007) Linearization of CMOS broadband power amplifiers through combined multigated transistors and capacitance compensation, IEEE Trans. Microw. Theory Tech., 55(11), pp. 2320-2328.
-
Li, J., Liu, G., and Giannakis, G.B., (2001) Carrier frequency offset estimation for OFDM-based WLANs, IEEE Signal Process. Lett., 8(3), pp. 80-82.