Performance Evaluation of Wavelet-Coded OFDM on a 4.9 Gb/s W-Band Radio-Over-Fiber Link

• Published in: Journal of lightwave technology Vol. 35; no. 14; pp. 2803 - 2809
• Main Authors: Cavalcante, Lucas C. P., Rommel, Simon, Dinis, Rui, Silveira Junior, L. G. Q., Silveira, L. F. Q., Monroy, Idelfonso Tafur
• Format: Journal Article
• Language: English
• Published: New York IEEE 15-07-2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Channels; Coding; Complexity; Decoding; Efficiency; Encoding; Equivalence; Fading channels; Frequency selectivity; mm-Wave; Mobile communication; Mobile communication systems; Modulation; Noise levels; Noise prediction; OFDM; Orthogonal Frequency Division Multiplexing; Radio frequency; radio-over-fiber; Receivers; Robustness; Running; Signal to noise ratio; Spectra; Subcarriers; W-band; Wavelet analysis; wavelet-coding
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2017.2701358

Future generation mobile communications running on mm-wave frequencies will require great robustness against frequency selective channels. In this paper, we evaluate the transmission performance of 4.9 Gb/s wavelet-coded orthogonal frequency division multiplexing (OFDM) signals on a 10 km fiber plus 58 m wireless radio-over-fiber link using a mm-wave radio frequency carrier. The results show that a 2 × 128 wavelet-coded OFDM system achieves a bit-error rate of 1e-4 with nearly 2.5 dB less signal-to-noise ratio than a convolutional coded OFDM system with equivalent spectral efficiency for 8 GHz-wide signals with 512 subcarriers on a carrier frequency of 86 GHz. Our findings confirm the Tzannes' theory that wavelet coding enables high diversity gains with a low complexity receiver and, most notably, without compromising the system's spectral efficiency.