Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Carrier frequency offset (CFO) estimation is a key challenge in wireless systems employing orthogonal frequency-division multiplexing (OFDM) modulation. Often, CFO estimation is carried out using a preamble made of a number, say  J  , of repetitive slots (RS).  here focus on the issue of optimal RS preamble design using the Cramer-Rao bound (CRB) averaged over the channel, which is assumed to be Rayleigh.  show that the optimal value of  J  is a tradeoff beten the multipath diversity gain and the number of unknowns to be estimated. In the case of correlated channel taps,  also show that uniform por loading of the active subcarriers is not optimal (in contrast with the uncorrelated case) and better por loading schemes are proposed. The proposed por loading schemes consist of allocating more por to activated carriers with higher signal-to-noise ratios. Simulation-based performance results of the maximum likelihood estimator support the CRB-based theoretical results.
['Mounir Ghogho', 'Philippe Ciblat', 'Ananthram Swami', 'Pascal Bianchi']
I am writing a research paper on a idea Training Design for Repetitive-Slot-Based CFO Estimation in OFDM
[{"from": "human", "value": "I am writing a research paper on a idea Training Design for Repetitive-Slot-Based CFO Estimation in OFDM"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Carrier frequency offset (CFO) estimation is a key challenge in wireless systems employing orthogonal frequency-division multiplexing (OFDM) modulation. Often, CFO estimation is carried out using a preamble made of a number, say  J  , of repetitive slots (RS).  here focus on the issue of optimal RS preamble design using the Cramer-Rao bound (CRB) averaged over the channel, which is assumed to be Rayleigh.  show that the optimal value of  J  is a tradeoff beten the multipath diversity gain and the number of unknowns to be estimated. In the case of correlated channel taps,  also show that uniform por loading of the active subcarriers is not optimal (in contrast with the uncorrelated case) and better por loading schemes are proposed. The proposed por loading schemes consist of allocating more por to activated carriers with higher signal-to-noise ratios. Simulation-based performance results of the maximum likelihood estimator support the CRB-based theoretical results."}]