Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: ,  present a simple and effective precoding technique to mitigate inter-symbol interference from multiple transmissions of the same packet in automatic repeat request (ARQ) protocols over slowly time-varying frequency-selective channels.  minimize the por of inter-symbol interference by introducing phase-precoding transmission diversity among subsequent ARQ transmissions. For each packet retransmission, only the phases of the modulated symbols are changed according to a specific pattern. In order to find the best precoding phases assuming that no channel state information is available at the transmitter,  first derive a performance criterion on the precoding phases for a maximum likelihood receiver. Then,  propose a low complexity periodic precoding solution. Simulation results show that the proposed precoding scheme provides a substantial gain in terms of frame error rate performance of the joint detector without significant increase in receiver complexity, leading to enhanced throughput efficiency and better dropping rate in comparison with the non-precoded system.
['Abdel-Nasser Assimi', 'Charly Poulliat', 'Inbar Fijalkow']
I am writing a research paper on a idea Phase-precoding without CSI for packet retransmissions over frequency-selective channels
[{"from": "human", "value": "I am writing a research paper on a idea Phase-precoding without CSI for packet retransmissions over frequency-selective channels"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: ,  present a simple and effective precoding technique to mitigate inter-symbol interference from multiple transmissions of the same packet in automatic repeat request (ARQ) protocols over slowly time-varying frequency-selective channels.  minimize the por of inter-symbol interference by introducing phase-precoding transmission diversity among subsequent ARQ transmissions. For each packet retransmission, only the phases of the modulated symbols are changed according to a specific pattern. In order to find the best precoding phases assuming that no channel state information is available at the transmitter,  first derive a performance criterion on the precoding phases for a maximum likelihood receiver. Then,  propose a low complexity periodic precoding solution. Simulation results show that the proposed precoding scheme provides a substantial gain in terms of frame error rate performance of the joint detector without significant increase in receiver complexity, leading to enhanced throughput efficiency and better dropping rate in comparison with the non-precoded system."}]