The Law Dictionary

Your Free Online Legal Dictionary • Featuring Black’s Law Dictionary, 2nd Ed.

CODE DIVISION MULTIPLE ACCESS (CDMA) Definition & Legal Meaning

Definition & Citations:

Digital cellular phone technology that does not sub-divide the available bandwidth for several separate calls. Instead, it assigns the entire bandwidth to one call and encodes each call, limiting decoding to the intended receiver. Since encoding removes the background noise and wide bandwidth transmits more data in the same period, clear, fast, and interference-free communication occurs. Version 1X provides a 1.25 megahertz bandwidth, and version 3X provides a 5 MHz bandwidth. Invented during World War 2 to evade jamming by Germany, it was developed for cellular use by the US firm Qualcomm, which owns most of its patents and all licensing rights. Refer also to TDMA. This contrast to Global System For Mobile Communication or GSM, which assigns a separate frequency to each call.

Disclaimer

This article contains general legal information but does not constitute professional legal advice for your particular situation. The Law Dictionary is not a law firm, and this page does not create an attorney-client or legal adviser relationship. If you have specific questions, please consult a qualified attorney licensed in your jurisdiction.