Answer Posted / yuvaraj

GSM/CDMA
1. CELL and Sector with multiple frequency / CDMA single
frequency as carrier {users are get identifies by codes}
2. used TDMA and FDMA for Accesing /CDMA uses CDMA method
3. GSM is intial 2G technology with intial voice rate of
9.6kbps/same with 14.4kbps
4.GSM emerges into WCDMA/cdma emerges into cdma 2000
5. power control in acces method is comparitively not
efficient (when compare to CDMA)/ cdma as PLL(phase locked
loops for power transmission) better
6.call hand off and network hand off is not smoother in
GSM/ CDMA follows soft handoff and handling call hence more
efficient
7. GSM use less bandwidth and more power comparitively /
CDMA uses less bandwidth and more power

8.cost wise for opeartor GSM is less costlier , but
efficiency wise CDMA is better

Do you know what is the main difference between 1x rtt and 1x evdo?

695

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Explain about pilot channel in cdma system?

705

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What is hard handover?

718

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What is forward channels in cdma?

760

---

Explain access channels?

770

---

What is pn sequence in cdma?

716

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What is reverse channels in cdma?

745

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Explain the cdma capacity?

797

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What is fdd and what are the frequencies it uses?

738

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What are the disadvantages of tdma?

761

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Please differentiate between cdma and fdma?

699

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Explain ev-do/ evdo?

752

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Explain pilot channel?

763

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Define Scrambling Code?

13442

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What does high cohesion mean?

685

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