CDMA optimizes the use of available bandwidth as it transmits over the entire frequency range and does not limit the user’s frequency range . It is used as the access method in many mobile phone standards.
Read moreWhy CDMA Cannot be used for higher bit rates?
CDMA has a soft capacity. The greater the number of codes, the more number of users. However, many codes are used S/I drops and the BER (Bit Error Rate) will increase for all users. CDMA requires a tight power control as it suffers from near-far effect .
Read moreWhat are the design features of CDMA?
CDMA in cellular systems offers attractive features such as the potential for high spectrum efficiency, soft capacity, soft handover and macro-diversity . This has been claimed and demonstrated in various system design studies, analyses and trials.
Read moreHow do you represent data in CDMA?
CDMA is a spread spectrum technique. Each data bit is spread by a code sequence . This means, energy per bit is also increased.
Read moreWhat is the duration of WCDMA frame?
radio frame structure of WCDMA is shown in Figure 1 [15]. Frame structure has an overall length of 10 ms , comprising 15 time-slots. …
Read moreWhat is voice activity factor in CDMA?
The Voice Activity Factor of 0.4 is considered = -4dB . CDMA has 100% frequency reuse. Use of same frequency in surrounding cells causes some additional interference.
Read moreWhy a given bandwidth is used most efficiently in CDMA?
CDMA technology claims that its bandwidth is thirteen times efficient than TDMA and forty times efficient than analog systems. CDMA also have better security and higher data and voice transmission quality because of the spread spectrum technology it uses, which has increased resistance to multipath distortion .
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