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In this paper, a variable step size (VSS)-least mean squares (LMS) channel estimation (CE) algorithm is proposed for a LTE SC-FDMA system that outperform the existing CE schemes by more than 3dB.
In this paper, we propose a low-complexity carrier frequency offset (CFO) estimation algorithm for OFDM based wireless LAN, IEEE 802.11a. The complexity of the arctangent operation to calculate the argument of auto-correlation for CFO estimation is reduced by a novel range pointer method. The proposed algorithm estimates fine CFO value first and then based on the fine CFO value, simple criteria is...
Quasi Cyclic Low Density Parity Check codes (QC-LDPC) is proposed to reduce the complexity of the Low Density Parity Check codes (LDPC) further while obtaining the similar performance. Our proposed QC-LDPC presents an improved construction of circulant sub-matrices based QC-LDPC at high SNR. The proposed construction yields a performance gain of about 1 dB at a 0.0003 bit error rate (BER). Proposed...
Energy efficient transmission with fairly high capacity is an attractive feature for energy constraint wireless sensor network. This opens a door for the outage analysis keeping the energy efficient performance active. We propose to employ LDPC codes to provide reliable communication while saving power in the sensor networks. We derive the ergodic and outage capacity for a cluster head to DGN transmission...
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