What are the advantages of using CDMA for cellular network?

Answer 1

CDMA is Code-Division Multiple Access abbreviation, full known as Code Division Multiple Access, is a more advanced digital interface technology, which is characterized by a high frequency of utilization, mobile low power consumption, good quality voice calls. 2. Compared with GSM phones, CDMA mobile phone has the following advantages: First, the transmission power is extremely small, so conversation is not only less radiation, but also longer battery life mobile phones.

Second, the use of advanced soft-switching technology allows mobile phone is not GSM phones are dropped.

Third, better call quality, almost no noise when making a call, in the case of large background noise, you can also get a better call quality.

Fourth, a high put-through rate. As military interference from CDMA systems, and the signal occupy the entire band, almost an ordinary narrow-band modulation efficiency of seven times, so for the same bandwidth, CDMA system is the GSM system capacity of 4 to 5 times the extent of its mesh-plug a significant decrease in Therefore, uptake rates are much higher. 3. Ordinary GSM and analog mobile phone power 600 milliwatts under the general control, while the CDMA system, the maximum is only 200 mW transmit power, general power can be controlled at 0:00 call a few milliwatts, its radiation is negligible, there is no health adverse effects. As the base station and mobile transmit power reduction, so handset talk-time will be greatly extended battery life phone will also be extended to protect the environment played a role, it is called the "green phone."

Answer 2

• Outstanding Voice and Call Quality

  CDMA filters out background noise, cross-talk, and interference so you can enjoy crystal-clear voice quality, greater privacy, and enhanced call quality. QUALCOMM's CDMA variable rate vocoder translates voice into digital transmissions, zeroes and ones, at the highest translation rates possible (8kbps or 13kbps). This allows for crystal clear voice and also maximizes your system capacity.

• Greatest Coverage for Lower Cost

  CDMA's spread spectrum signal provides the greatest coverage in the wireless industry, allowing networks to be built with far fewer cell sites than is possible with other wireless technologies. Fewer cell sites translates to reduced operating expenses, which results in savings to both operators and consumers.

• Packet Data

  CDMA networks are built with standard IP packet data protocols. Other networks require costly upgrades to add new data equipment in the network and will require new data phones. Standard cdmaOne phones already have TCP/IP and PPP protocols built into them.

• Longer Talk Time, Longer Battery Life and Smaller Phones

  You can leave your phone on with CDMA. CDMA uses power control to monitor the amount of power your system and handset need at any time. CDMA handsets typically transmit at the lowest power levels in the industry, allowing for longer battery life which results in longer talk time and standby time. CDMA handsets can also incorporate smaller batteries, resulting in smaller, lighter-weight phones. Easier to carry. Easier to use.

• Fewer Dropped Calls

  CDMA's patented "soft handoff," method of passing calls between cells sharply reduces the risk of disruption or dropped calls during a handoff. The process of soft handoff leads to fewer dropped calls as 2 or 3 cells are monitoring your call at any given time.

• Improved Security and Privacy

  CDMA's digitally encoded, spread spectrum transmissions resist eaves dropping. Designed with about 4.4 trillion codes, CDMA virtually eliminates cloning and other types of fraud.

• Greater Capacity

  CDMA allows the largest number of subscribers to share the same radio frequencies, helping service providers increase their profitability. CDMA uses spread spectrum technology which can provide up to 10-20 times the capacity of analog equipment and more than three times the capacity of other digital platforms. With dual-mode phones, CDMA is compatible with other technologies for seamless widespread roaming coverage.

• Reduced Background Noise and Interference

  CDMA combines multiple signals and improves signal strength. This leads to the near elimination of interference and fading. Both electrical background noise (computer noise) and acoustic background noise (background conversations) are filtered out by using narrow bandwidth which corresponds to the frequency of the human voice. This keeps background noise out of your conversations.

• Rapid Deployment
• Wide Product Selection
• Continuing Technology Advances etc

answer by Mehreen khan