Low complexity MMSE based channel estimation technique for LTE OFDMA systems
Rana, Md. Masud and Kouzani, Abbas Z. 2010, Low complexity MMSE based channel estimation technique for LTE OFDMA systems, International journal of computer science and information security, vol. 8, no. 8, pp. 52-56.
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Long term evolution (LTE) is designed for high speed data rate, higher spectral efficiency, and lower latency as well as high-capacity voice support. LTE uses single carrierfrequency division multiple access (SC-FDMA) scheme for the uplink transmission and orthogonal frequency division multiple access (OFDMA) in downlink. The one of the most important challenges for a terminal implementation are channel estimation (CE) and equalization. In this paper, a minimum mean square error (MMSE) based channel estimator is proposed for an OFDMA systems that can avoid the ill-conditioned least square (LS) problem with lower computational complexity. This channel estimation technique uses knowledge of channel properties to estimate the unknown channel transfer function at non-pilot subcarriers.
Field of Research
090609 Signal Processing 100510 Wireless Communications
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