For CDMA, which is the weaker Link: FWD or Reverse? Why?
Answers were Sorted based on User's Feedback
Answer / tanuj
Reverse link is weak in CDMA because of use of PN Long codes compared to Walsh codes in the forward link. Since, walsh codes are perfectly orthogonal in nature there is less interference in the forward link. PN long codes on the other hand are non-orthogonal in nature. However, we cant use walsh codes for the reverse link as it may seem from the above as the best possible solution. This is because walsh codes are very small in number (64/128/512 max), and hence are not sufficient for identification of large number of users in the reverse link for which the PN long codes are employed.
Is This Answer Correct ? | 8 Yes | 2 No |
Answer / mujahid zafar
Reverse link.
b/c less signaling is on reverse link.
Is This Answer Correct ? | 8 Yes | 3 No |
What is ev-do/ evdo?
What is multi-path fading?
What is tdd and what are the frequencies it uses?
What is the difference between request scope and session scope?
Explain access channels?
Explain reverse traffic channels?
What is CDMA? What’s the use of that?
What are the types of cohesion?
What is soft handover/handoff?
What are the disadvantages of tdma?
What was its origin ?
Can cdma sim be used in gsm mbile?