An adaptive code position modulation scheme for wireless sensor networks

Yong Yuan, Zongkai Yang, Jianhua He, Wenqing Chen

Research output: Contribution to journalArticlepeer-review


In this letter, an energy-efficient adaptive code position modulation scheme is proposed for wireless sensor networks to provide the relatively stable bit error ratio (BER) performance expected by the upper layers. The system is designed with focus on the adaptive control of transmission power, which is adjusted based on the measured power density of background noise. Interfaces among the modulation module, packet scheduling module and upper layer are provided for flexible adjustments to adapt to the background noise and deliver expected application quality. Simulations with Signal Processing Worksystem (SPW) validate the effectiveness of the scheme.
Original languageEnglish
Pages (from-to)481-483
Number of pages3
JournalIEEE Communications Letters
Issue number6
Publication statusPublished - Jun 2005


  • code position modulation
  • transmission power control
  • wireless sensor network
  • adaptive control system
  • bit error rate
  • computer simulation
  • packet networks
  • spurious signal noise
  • wireless communication network


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