A question about subscribers and data capacity????

If in a cellular system, the spectral effeciency is 4bps/Hz....and 200kHz channel each with 10MHz total bandwidth....how can we calculate the number of subscribers supported per cell and the data capacity of each channel...
Should 4bps/Hz be taken as 1 symbol/sec???

Salam
You should specify some points.
First your network access. FDMA or TDMA or CDMA ? capacity in these 3 are different. I think your problem is in FDMA. OK ....
Then u should specify the number of cells in clusters. It is a common method in cellular network for increasing capacity. The 7 cells in each cluster is common. OK...
Then in each cells (not cluster) the net has 10M/(200K*7)=7 channels and in each cluster 50 channels. OK...
The number of users in each cells greater than 7 and in each cluster greater than 50 because in 1 time all users dont use all the channels. the actual number of users depend on Quality of Service in net. for example Erlang B or C formula. OK...
Then the number of users in the city or net equals to number of users in each cluster multiply to number of clusters in net.

1.What is the basis of deciding the number of cells per cluster?
2. For better QOS more number of cell/clusters are preferred or it is vice versa?
3. How many maximum cells one can have in a cluster?
Thanks if some body can explain these doubts.
DKK

Salam
The number of cells in cluster is N = i^2 + i*j + j^2 and i , j are 2 integers. but
N = 7 or 12 is common.