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In this document, the problem of OFDMA multi-user resource allocation based on MMSE channel
estimation is considered. Maximization of system capacity, based on available error-free instantaneous
estimated channel state information at the transmitter, is the goal. Optimal power distribution between
different subchannels is computed analytically, and it is shown that equal power allocation among
subcarriers is almost near the...
In this programe a highly scattered enviroment is considered. The Capacity of a MIMO channel with nt transmit antenna and nr recieve antenna is analyzed. The power in parallel channel (after SVD decomposition) is distributed as water-filling...
The comb pilot aided channel estimation in ofdm modulation is considered. The power of pilot subchannels is under the control.
The data experience frequency selective channel then the AWGN noise is added to make the situation worse. The...
As the power needed to transmit a certain number of bits in
a subcarrier is independent of the numbers of bits allocated to
other subcarriers, it turns out that a greedy approach is optimal.
A greedy algorithm assigns bits to the...
The Matlab code investigates the harmful effects of high power amplifier on ofdm signals.
It is imagined that the amplifier destroy the amplitude of the transmitted signal due to saturation and has no effect on the signal phase. The...
The program distributes an amount power among ofdm subchannel to make the capacity of a channel.
Here, we consider only the distance based localization of a single target. There are N anchor nodes in the system and one mobile node, we use the measured distances and we find the location of the mobile through
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