Communication breaking space for CDMA portable radio telephone

✍ Scribed by Akihiko Sugiura; Minoru Takakura; Hiromichi Inayoshi

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 401 KB
• Volume: 83
• Category: Article
• ISSN: 8756-6621
• DOI: 10.1002/(sici)1520-6424(200010)83:10<48::aid-ecja6>3.0.co;2-w

✦ Synopsis

The effects of mobile communications on electronic devices have become problematic. There is an increased need to develop artificially an environment in which communication equipment cannot be used. In the present research, a space is secured by breaking communication for CDMA portable telephones. In this paper, the communication is broken by means of a system to interfere with the pilot signal of the downlink. The process gain is evaluated by means of a test setup. It is confirmed that a communication breaking space can be secured even with a weak power of about 12 dB in comparison with the interference by means of an inverted amplifier. Further, it is confirmed that the area of the communication breaking space can be extended by power control of the breaking signal.