Throughput and delay performance with a cooperative retransmission scheme using distributed beamforming

Three synchronization issues, i.e., symbol time, phase, and frequency, have to be properly controlled to achieve distributed beamforming gain. In this paper, the impacts of synchronization errors in distributed beamforming are analyzed for OFDM systems. For symbol timing error of cooperating signals, high frequency subcarriers are more susceptible as compared to low frequency ones. The desired signal loss due to phase and frequency offset is independent of subcarrier number. However, frequency offset is critical in OFDM systems since it leads to interference from the other subcarriers as well as power loss in the desired signal. Performance degradation due to three synchronization errors is shown with various numbers of cooperating signals and offset values. It shows that the performance analysis is well matched with simulation results.

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System Performance with Synchronization Errors in Distributed Beamforming Systems

Kim

Kwon

2015

Journal of Korea Multimedia Society

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Throughput and delay performance with a cooperative retransmission scheme using distributed beamforming

Cited by 3 publications

References 10 publications

Effect of Frequency Offset in OFDM Systems with Distributed Beamforming

Effect of Frequency Offset in OFDM Systems with Distributed Beamforming

Effect of Synchronization Errors with Distributed Beamforming in OFDM Systems

System Performance with Synchronization Errors in Distributed Beamforming Systems

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