Performance analysis of OFDM system with transmit antenna selection using delayed feedback

Trivedi, Y. N.

doi:10.1016/j.aeue.2013.02.002

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…But in practice, the feedback channel is band limited and in MIMO-OFDM systems, with the increase in number of subcarriers and number of antennas, the amount of CSI data also grows linearly. Therefore, when the data transmitted through the limited feedback channel increases, it leads to occurrence of non-zero feedback delay [5,6].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Miso-Ofdm System With Delayed Feedback

Gawande¹

2014

IJRET

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Orthogonal Frequency Division Multiplexing (OFDM) is combined with Multiple Input Multiple Output (MIMO) systems in recent wireless standards to provide high data rate with reliable communication. Improvement in performance of the system can be achieved when Channel State Information (CSI) is used at the transmitter to perform adaptation. The diversity gains are diminished when the adaptations are done with the delayed outdated CSI. Here we derive the closed-form average Bit Error Rate (BER) expression for Multiple Input Single Output (MISO)-OFDM system, as a function of correlation () between perfect CSI and delayed CSI. Here, we develop an analytical model which explains the effect of feedback delay. The simulation results for analytical model also prove that the diversity gain of considered MISO-OFDM system decreases for .

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of Miso-Ofdm System With Delayed Feedback

Gawande¹

2014

IJRET

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“…The modulation and demodulation could be equivalent to IDFT and DFT. Due to the N points IDFT operation need to implement the times of 2 N complex multiplication, IFFT can reduce the complexity of operation [6]. Thus, the actual COFDM system often use IFFT and FFT to achieve the modulation and demodulation process.…”

Section: Mathematical Modelmentioning

confidence: 99%