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1 generalize the staggered stream structure of the d-blast architecture to a mimo channel with nt gt 2 transmit
1 a mimo channel has a single cluster with the directional cosine ranges as egtt egtr 0 1 compute the number of
spatial sampling consider a mimo system with lt lr 2 in a channel with m 10 multipaths the ith multipath makes an
consider a circular array of radius r normalized by the carrier wavelength with n elements uniformly spaced1 compute
interaction between space-time codes and multiuser diversity schedul- ing a design is proposed for the downlink is-856
1 selective feedback the downlink of is-856 has k users each experi- encing iid rayleigh fading with average snr of 0
within a cell in the is-856 system there are eight users on the edge and one user near the base-station every user
the optimal power allocation with full csi in the symmetric uplink with the assumption that there is always a unique
the interference-limited spectral efficiency in the many- user regime was calculated for both cdma and ofdm now suppose
consider the downlink of the is-856 system1 suppose there are two users on the cell edge users are scheduled on a
1 consider the uplink of an is-95 systema a single cell is modeled as a disk of radius 1 km if a mobile at the edge
1 consider the uplink of a single is-95 cell where all the users are controlled to have the same received power p at
the sum constraint in applies because the two users send inde- pendent information and cannot cooperate in the encoding
in the text we have analyzed the performance of fading channels under the assumption of receiver csi the csi is
this exercise applies basic capacity results to analyze the is-856 system you should use the parameters of is-865 given
in this exercise we study the price of channel inversion1 consider a narrowband rayleigh flat fading siso channel
consider the frequency-selective channel with csi only at the receiver with l iid rayleigh faded paths1 compute the
in this exercise we study the outage capacity of the parallel channel in further detail1 find an approximation for
consider a system with 1 transmit antenna and l receive antennas independent cn 0 n0 noise corrupts the signal at each
the outage performance of the slow fading channel depends on the randomness of log1 lhl2snr one way to quantify the
consider a linear cellular model with equi-spaced base-stations at distance 2d apart with a reuse ratio of p
in the downlink of a cdma system each users signal is spread onto a pseudonoise sequence13 uncoded bpsk modulation is
consider the uplink of a single-cell cdma system with n users active all the time in the text we have assumed the
out-of-cell interference averaging consider a cellular system with two adjacent single-dimensional cells along a
consider the uplink of a cdma system suppose there is only a single cell with just two users communicating to the