Low-Complexity Leakage-Based Carrier Frequency Offset Estimation Techniques for OFDMA Uplink Systems

In this paper, the authors propose an efficient Carrier Frequency Offset (CFO) estimation technique based on the Space Alternating Generalized Expectation-maximization (SAGE) for uplink Orthogonal Frequency Division Multiple Access (OFDMA) systems. In general, the SAGE method transforms a multidimensional search problem into a sequence of one-dimensional searches, which greatly simplifies the estimation procedure. However, the conventional algorithms based on the SAGE method require a large amount of computations to estimate the CFO due to exhaustive grid search.

Provided by: Institute of Electrical and Electronics Engineers Topic: Mobility Date Added: Oct 2010 Format: PDF

Find By Topic