Real-time multimedia broadcasting via direct-detection fiber-optic synchronous CDMA networks

A new coding architecture for M-ary fiber-optic synchronous code division multiple access (CDMA) network is proposed to provide real-time multimedia broadcasting. In contrast with variable bit rate (VBR) transmission, the constant bit rate (CBR; i.e. isochronous) transport is more preferable in view of the networking simplicity. We apply a bit-stuffed unipolar m-sequence and maximum a posteriori (MAP) receiver in the proposed network. The system performance is determined by the following parameters: (1) number of simultaneous access broadcasting hosts K, (2) received laser power, (3) input bit rate, and (4) the dimension of M. Furthermore, the adverse impact (thermal noise, APD noise) in the photodetection process is carefully analyzed. Numerical results reveals that for the binary case, the aggregate capacity can achieve 10.2 Gbps.

[1]  Jawad A. Salehi,et al.  Code division multiple-access techniques in optical fiber networks. I. Fundamental principles , 1989, IEEE Trans. Commun..

[2]  A. Viterbi.  CDMA: Principles of Spread Spectrum Communication , 1995 .

[3]  David Tse,et al.  RCBR: a simple and efficient service for multiple time-scale traffic , 1997, TNET.

[4]  Xiaoli Sun,et al.  Gaussian approximation versus nearly exact performance analysis of optical communication systems with PPM signaling and APD receivers , 1988, IEEE Trans. Commun..

[5]  J. Goodman,et al.  Optical fiber delay line signal processing , 1984 .

[6]  Paul R. Prucnal,et al.  Spread spectrum fiber-optic local area network using optical processing , 1986 .

[7]  Wing C. Kwong,et al.  Performance comparison of asynchronous and synchronous code-division multiple-access techniques for fiber-optic local area networks , 1991, IEEE Trans. Commun..

[8]  Robert M. Gagliardi,et al.  Fiber-optic digital video multiplexing using optical CDMA , 1993 .

[9]  A.A. Sawchuk,et al.  Digital optical computing , 1984, Proceedings of the IEEE.

[10]  John G. Proakis,et al.  Digital Communications , 1983 .

[11]  Soung Chang Liew,et al.  A control-theoretic approach to adapting VBR compressed video for transport over a CBR communications channel , 1998, TNET.

[12]  Victor O. K. Li,et al.  Performance analysis of slotted fiber-optic code-division multiple-access (CDMA) packet networks , 1997, IEEE Trans. Commun..

[13]  James B. Abshire,et al.  Performance of OOK and Low-Order PPM Modulations in Optical Communications When Using APD-Based Receivers , 1984, IEEE Trans. Commun..

[14]  Jawad A. Salehi,et al.  Code division multiple-access techniques in optical fiber networks. II. Systems performance analysis , 1989, IEEE Trans. Commun..

[15]  Hyuck M. Kwon,et al.  Optical orthogonal code-division multiple-access system .I. APD noise and thermal noise , 1994, IEEE Trans. Commun..