Skip to main content
Article thumbnail
Location of Repository

Adaptive modulation schemes for optical wireless communication systems

By Yu Zeng


High-speed wireless optical communication links have become more popular for\ud personal mobile applications. This is a consequence of the increasing demand\ud from the personal information service boom. Compared to the radio frequency\ud domain, optical wireless communication offers much higher speeds and bit rates\ud per unit power consumption. As stated by the official infrared standard IrDA\ud optical communication enjoys much lower power consumption than Bluetooth,\ud with an inherent security feature while in Line of Sight (LOS) applications. There\ud are also drawbacks such as the infrared radiation cannot penetrate walls as radio\ud frequencies do and interference from the background contribute to the channel\ud dispersions.\ud Focus on the modulation aspects of the optical wireless communication, this\ud thesis try to improve the channel immunity by utilising optimised modulation to\ud the channel. Modulation schemes such as on off keying (OOK), pulse amplitude\ud modulation (PAM) and pulse position modulation (PPM) and pulse position and\ud amplitude modulation PAPM schemes have been validated. The combined power\ud and bandwidth requirements suggest that the adaptive modulation schemes can\ud provide reliability when deployed in a real time channel, resulting in improved\ud system performance.\ud As a result, an adaptive modulation technique is proposed. Extensive simulations\ud of severe noise distraction have been carried out to validate the new scheme. The\ud simulation results indicate that the new scheme can provide increased immunity\ud against channel noise fluctuation at a relatively low complexity. The scheme\ud obtained formed a basis to support reliable mobile optical wireless\ud communication applications.\ud The adaptive scheme also takes the real time channel conditions into account,\ud which is different from existing schemes. Guaranteed system performance can be\ud secured without compromising power and bandwidth efficiency. This is also a\ud new approach to realise reliable optical wireless links. Fuzzy logic control\ud module has been developed to match the adaptive pattern

Topics: TK
OAI identifier:

Suggested articles


  1. (2001). 155 Mbit/s wireless transmission with imaging Infrared receiver," doi
  2. (2000). A first course in fuzzy logic. doi
  3. (2009). A Genetic Algorithm Method for Optical Wireless Channel Control," Lightwave Technology, doi
  4. (1999). A multilevel modulation scheme for highspeed wireless Infrared communications," doi
  5. (2002). A physical model of the wireless Infrared communication channel," Selected Areas in Communications, doi
  6. (1998). A robust wireless Infrared system with channel reciprocity," doi
  7. (2007). A synopsis of modulation techniques for wireless Infrared communication," doi
  8. (1994). Adaptive fuzzy systems and control : design and stability analysis. doi
  9. (2006). Adaptive pulse amplitude and position modulation for optical wireless channels," doi
  10. (2007). An Introduction to Adaptive QAM Modulation Schemes for Known and Predicted Channels," doi
  11. (1993). An introduction to fuzzy control. doi
  12. (2000). Analysis of Infrared wireless links employing multibeam transmitters and imaging diversity receivers," doi
  13. (2004). ANFIS based modelling and control of non-linear systems : a tutorial," in doi
  14. (1993). ANFIS: adaptive-network-based fuzzy inference system," doi
  15. (2000). Angle diversity for nondirected wireless Infrared communication," doi
  16. (1977). Applications of fuzzy logic to approximate reasoning using linguistic synthesis," doi
  17. (2005). Artificial intelligence : a guide to intelligent systems: Harlow ;
  18. (2003). Artificial intelligence : a modern approach. Upper Saddle River,
  19. (2006). Bit-loading for modulationadaptive transmission in Infrared wireless indoor communication," doi
  20. (2005). Broadband last mile : access technologies for multimedia communications. doi
  21. (2001). Broadband wireless access and future communication networks," doi
  22. Cablefree Gigabit Product,",
  23. (2000). CableFree Virtual-Point-to-MultiPointâ„¢ White Papers,"
  24. (2004). Capacity bounds for power- and band-limited optical intensity channels corrupted by Gaussian noise," Information Theory, doi
  25. (2000). Capacity of PulsePosition Modulation (PPM) on Gaussian and Webb Channels," doi
  26. (2005). Capacity-achieving probability measure for conditionally Gaussian channels with bounded inputs," Information Theory, doi
  27. (1997). Channel reuse strategies for indoor Infrared wireless communications," doi
  28. (2002). Chaturi Singh, K.K.Tripathi, "A Review of Indoor Optical Wireless Systems," doi
  29. (1994). Coded multipulse modulation in optical communication systems," doi
  30. (1999). Coding and equalization for PPM on wireless Infrared channels," doi
  31. (1984). Communication in the presence of noise," doi
  32. (1998). Communication requirements and standards for low voltage mains signalling," Power Delivery, doi
  33. (1969). Communication under the Poisson regime," Information Theory, doi
  34. (1988). Communication Using Pseudonoise Modulation on Electric Power Distribution Circuits," doi
  35. (1995). Compound Parabolic Concentrators for Narrow-Band Wireless Infrared Receivers," doi
  36. (2002). Computational intelligence : an introduction. doi
  37. (1995). de Oliveira Duarte, "Characterisation and modelling of artificial light interference in optical wireless communication systems," doi
  38. (1996). de Oliveira Duarte, "Performance of Infrared transmission systems under ambient light interference," Optoelectronics, doi
  39. (1996). de Oliveira Duarte, "Reducing the effects of artificial light interference in wireless Infrared transmission systems," doi
  40. (1999). Decision-feedback equalization of pulse-position modulation on measured nondirected indoor Infrared channels," doi
  41. (2005). Differential amplitude pulse-position modulation for indoor wireless optical communications " doi
  42. (1999). Differential pulse-position modulation for power-efficient optical communication," doi
  43. (1995). Digital communications, 3rd ed.
  44. (2000). Digital pulse interval modulation for IR communication systems - a review," doi
  45. (1998). Digital pulse interval modulation for optical communications," doi
  46. (1996). Effect of electronic-ballast fluorescent lighting on wireless Infrared links," in Communications, doi
  47. (1996). Effect of electronic-ballast fluorescent lighting on wireless Infrared links," Optoelectronics, doi
  48. (2000). Efficient simulation of the impulse response of the indoor wireless optical channel," doi
  49. (1981). Error-correction coding for digital communications. doi
  50. (2000). Evolutionary computation : toward a new philosophy of machine intelligence, 2nd ed.
  51. (1998). Experimental 25-Mb/s Wireless Infrared Link Using 4-PPM with Scalar Decision-Feedback Equalization," doi
  52. (2002). Fixed broadband wireless access networks and services. doi
  53. (2002). Fuzzy logic and probability applications : bridging the gap," in ASA-SIAM series on statistics and applied probability doi
  54. (1995). Fuzzy logic systems for engineering: a tutorial," doi
  55. (2004). Fuzzy logic with engineering applications, 2nd ed. doi
  56. (1997). Fuzzy model identification : selected approaches. doi
  57. (1975). Fuzzy sets and their applications to cognitive and decision processes: doi
  58. (1965). Fuzzy sets," doi
  59. (2004). Imitation of life : how biology is inspiring computing. doi
  60. (1999). Indoor optical wireless communications," doi
  61. (1995). Industrial applications of fuzzy technology in the world," in Advances in fuzzy systems. applications and theory ; vol.2 Singapore ; River Edge, NJ: World Scientific, doi
  62. (2006). Infrared Data Association Serial Infrared Physical Layer Measurement Guidelines Version 1.2.7," Infrared Data Association,
  63. (2001). Infrared Data Association Serial Infrared Physical Layer Specification Version 1.4," Infrared Data Association,
  64. (1986). IR RoomNet: Model and Measurement,"
  65. (2001). IrDA-VFIr (16 Mb/s): modulation code and system design," doi
  66. (2002). Iterative site-based modeling for wireless Infrared channels," Antennas and Propagation, doi
  67. (1980). LED bandwidth improvement by bipolar pulsing," doi
  68. (1995). Link Design for Non-Directed Wireless Infrared Communications," doi
  69. (2003). Market Requirements for IrBurst," Infrared Data Association,
  70. (2002). Marketing Requirement for UFIR,"
  71. (2002). MATLAB programming for engineers.
  72. (2009). Matlab Tutorial on Fuzzy Inference Systems (2009a),"
  73. (1997). Modeling of nondirected wireless Infrared channels," doi
  74. (1989). MPPM: a method for improving the bandutilization efficiency in optical PPM," doi
  75. (2006). Multilevel Digital Pulse Interval Modulation Scheme for Optical Wireless Communications," in Transpwerent Optical Networks, doi
  76. (1996). Multiple-subcarrier modulation for nondirected wireless Infrared communication," Selected Areas in Communications, doi
  77. (2009). Nervous system." vol.
  78. (2003). Neural networks : algorithms and applications.
  79. (1997). Optical interference produced by artificial light,"
  80. (2004). Optical transmission systems engineering.
  81. (2008). Optical wireless communications : IR for wireless connectivity. doi
  82. (1993). Optical wireless LANs: applications and systems,"
  83. (1998). Optical wireless: the story so far," doi
  84. (2003). Optimization of urban optical wireless communication systems," doi
  85. (1996). Performance Evaluation of Experimental 50-Mb/s Diffuse Infrared Wireless Link using On-Off Keying with Decision-Feedback Equalization," doi
  86. (1996). Performance of pulse-position modulation on measured non-directed indoor Infrared channels," doi
  87. (1997). PhD thesis, Coded modulation and equalization for wireless Infrared communications,"
  88. (1995). Portable videoon-demand in wireless communication," doi
  89. (1964). Possibilities of optical communications,"
  90. (2001). Principles of data mining. doi
  91. (1996). Principles of Lightwave Communications. Chichester ; doi
  92. (2005). Proposed Changes to Infrared Data Association Serial Infrared Physical Layer Link Specification for UFIR (100Mbit/s) Addition," Infrared Data Association,
  93. (2004). Pulse position modulation for spectrum-sliced transmission," doi
  94. (1970). Radiation losses in glass optical fibers,"
  95. (2009). Radiofrequency and Microwave Radiation -Health Effects." vol.
  96. (2000). Rate-adaptive indoor Infrared wireless communication systems using repeated and punctured convolutional codes," doi
  97. (1999). Rate-adaptive modulation techniques for Infrared wirelesscommunications," doi
  98. (2006). Rate-adaptive multiple sub-carrier-based transmission for broadband Infrared wireless communication," Optical Fiber Communication Conference, doi
  99. (1998). Real-time voice over packet-switched networks," doi
  100. (2008). Recent developments in indoor optical wireless systems," doi
  101. (1993). Simulation of multipath impulse response for indoor wireless optical channels," Selected Areas in Communications, doi
  102. (2006). Spectral characterisation of variable weight MPPM modulation technique," doi
  103. (1996). The Internet phenomenon," doi
  104. (2000). The logic of knowledge bases. doi
  105. (2000). The performance of optical wireless OOK, 2-PPM and spread spectrum under the effects of multipath dispersion and artificial light interference," doi
  106. (2000). The rise and rise of optical fibers," Selected Topics in Quantum Electronics, doi
  107. (2008). The Royal Society for the Prevention of Accidents," Accessed
  108. (2002). Totally internally reflecting optical antennas for wireless IR communication,"
  109. (2004). Trellis-coded multiple-pulse-position modulation for wireless Infrared communications," doi
  110. (2007). Tunable Pulse Amplitude and Position Modulation Technique for Reliable Optical Wireless Communication Channels," doi
  111. (2007). Upper and Lower Bounds on the Capacity of Wireless Optical Intensity Channels," doi
  113. (2003). WHO research agenda for radio frequency fields." vol.
  114. (2000). Why digital entertainment drives the need for speed," doi
  115. (1979). Wireless in-house data communication via diffuse Infrared radiation," doi
  116. (1997). Wireless Infrared communications," doi
  117. (1994). Wireless Infrared communications. doi
  118. (2005). Wireless optical communication systems. doi
  119. (1991). Wireless personal communications: trends and challenges," doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.