System Wide Implementation of Photonically Generated Impulse Radio Ultra-Wideband for Gigabit Fiber-Wireless Access

Abstract

In this paper, we comprehensively review our research work on system wide implementation of photonically generated IR-UWB signals based on relaxation oscillations of a semiconductor laser. Firstly, we present our novel approach as a flexible method for photonic generation of high speed impulse radio ultra-wideband (IR-UWB) signals at 781.25 Mbps with on-off keying (OOK) and binary phase shift keying (BPSK) modulation formats. We further advance the state-of-the-art to include multi-Gigabit IR-UWB signal generation. Both OOK and BPSK signals comply with the Federal Communications Commission (FCC) regulation. Secondly, we implement UWB fiber transmission systems and study hybrid fiber-wireless transmission performance at a system level. This is accomplished by employing our digital signal processing (DSP) assisted receiver. The photonic generation method is superior to the state-of-the-art electronic generation method in terms of transmission bit-error rate performance. Moreover, photonic IR-UWB generation is shown to be capable of longer wireless reach due to its lower bandwidth limitation. Finally, we experimentally demonstrate the integration of a relaxation oscillations-based UWB photonic generation system into existing wavelength division multiplexing passive optical networks (WDM-PON) infrastructure. This provides converged Gigabit indoor wireless and wireline access services.Index Terms-Fiber-wireless access, impulse radio, relaxation oscillations, ultrawideband, UWB-over-fiber, WDM-PON.

On the Issues and Challenges of Fiber-Wireless (Fi-Wi) Networks

“…The work in [17] tries to attain the fairness guarantee among different traffic flows and to maximize the network throughput. Some works like [18][19][20][21][22][23] address signal processing issues for better performance of the links in Fi-Wi structure.…”

Review of physical layer networking for optical-wireless integration

“…Much research has been targeted toward wireless distribution over passive optical networks (PONs) and various wireless standards including 3G, 3,4 LTE-A, 5 WiFi, [6][7][8] WiMAX, [7][8][9][10][11][12][13][14][15] and UWB [16][17][18][19] have been demonstrated overlaying on PON infrastructure. In addition to these wireless standards, a significant amount of work has also been targeted toward millimeter-wave (mm-wave) wireless signals' distribution.…”

Transmission Performance Investigation of IR-UWB Signals over Existing optical fiber Transmission link

“…Ultra wide band (UWB) communication is an emerging technology that uses very low energy levels for transmitting data over a wide portion of the radio spectrum [1,2]. This technology has attracted increasing interest in recent years for short range high speed wireless communication over high bandwidth within unlicensed spectrum (3.1-10.6 GHz) as specified by the Federal Communicating Comission (FCC) [3,4]. The UWB-based communication is characterized by low interference to existing wireless systems due to its very low signal-to-noise ratio (SNR) operation and extremely low radiation power spectral density (PSD) (below -41.3 dBm/MHz) [3,5].…”

“…This technology has attracted increasing interest in recent years for short range high speed wireless communication over high bandwidth within unlicensed spectrum (3.1-10.6 GHz) as specified by the Federal Communicating Comission (FCC) [3,4]. The UWB-based communication is characterized by low interference to existing wireless systems due to its very low signal-to-noise ratio (SNR) operation and extremely low radiation power spectral density (PSD) (below -41.3 dBm/MHz) [3,5]. Modern UWB communication systems may be realized in the impulse form leading to the concept of impulse radio (IR) UWB transmission.…”

“…This leads to new communication technology called UWB-over-fiber (UWBoF) which attracts increasing interest in recent years [16,17]. This new technology can be considered as interdisciplinary field combining the best of the optical and wireless words and makes use of the concepts behind optical fiber-based access technologies such as fiber-to-the-home and fiber-to-thebuilding [3]. Impulse radio UWBoF communication exhibits additional features such as [3,18] (i) No RF carrier modulation is required at the transmitter side, the signal is transmitted through the fiber in UWB native format.…”