Impact of Feedback Channel Delay on Adaptive OFDMA Systems
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چکیده
Most standards for the forthcoming beyond 3G (B3G) and 4G technologies state Orthogonal Frequency-Division Multiple Access (OFDMA) as a very promising candidate to be used as a digital modulation scheme. OFDMA combines multiple access techniques with Adaptive Quadrature Amplitude Modulation (AQAM) to maximize system performance while keeping the errors below a certain target. In order to achieve this objective, Channel Quality Indicators (CQI) are fedback from the receivers. However, potential delays in the reception of such CQIs may lead to a system performance degradation. This paper analyzes the impact of CQI feedback delay over a Long Term Evolution (LTE) network.
منابع مشابه
General Chairs Tpc Chairs Technical Program Committee Impact of Feedback Channel Delay on Adaptive Ofdma Systems . . . . . . 1 Impact of Feedback Channel Delay on Adaptive Ofdma Systems
Most standards for the forthcoming beyond 3G (B3G) and 4G technologies state Orthogonal Frequency-Division Multiple Access (OFDMA) as a very promising candidate to be used as a digital modulation scheme. OFDMA combines multiple access techniques with Adaptive Quadrature Amplitude Modulation (AQAM) to maximize system performance while keeping the errors below a certain target. In order to achiev...
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تاریخ انتشار 2007