Hello,
I try to simulate an Ad-Hoc network on NS2. First of all, I try to introduce a
OFDMA into NS2.
OFDMA (Othogonal Frequency Division Multiple Access) is beging considered as a
Multiuser-OFDM and as a multiple access method.
OFDMA provides multiplexing operation of data streams from multiple users onto
the downlink sub-channels and uplink multiple access by means of uplink
sub-channels.
In OFDMA, both time and/or frequency resources are used to seperate the multiple
user signals. Il allows for partitioning the time and frequency resources into
:
OFDM symbols, s=1,...,S (in time dimension)
OFDM subcarriers, n=1,...N (in frequncy dimension)
Each user is allocated a number of OFDM symbols and subcarriers exclusively.
I don't know how to start ??? I try to find solutions of allocation of different
subcarriers to different user.
Please help me.
Thank you at all in advance.
Soumaya.
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