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The orthogonal frequency division multiplexing (OFDM) is currently used in long term evolution (LTE) system. The time offset estimation (TOE) and frequency offset estimation (FOE) of OFDM is essential in mobile communication base. According to the conventional cross correlation TOE and FOE algorithms, a new cross correlation computation was proposed to estimate the time offset and frequency offset...
Orthogonal frequency division multiplexing (OFDM) is one of the key techniques for long term evolution (LTE) system. Frequency offset estimation of OFDM is an essential issue. Especially in the high-speed environment, the frequency offset will become large. Based on the features of LTE uplink physical random access channel (PRACH), this paper proposes a new frequency offset algorithm by using peak...
To fully exploit the performance benefits of relay station (RS), in the two-hop cellular networks covering hotspots, when the number of RSs is predetermined, both RS deployment and frequency reuse scheme are jointly optimized for the purpose of maximizing the system capacity based on the constraints of system demand of capacity and the maximum number of outage demand nodes (MNDN). Further, considering...
Non-line-of-sight (NLOS) propagation is a major source of error for accurate time-of-arrival (TOA) location estimation. The two-step least square (LS) method, which does not need any information about the distribution of the NLOS error, has been studied in related researches to provide efficient location estimation of the mobile terminal (MT). By observing the estimation of the error covariance matrix...
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