[求助]紧急求救：几道通信原理题目，哪位高手能解答一下。

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一）Design a baseband three dimensional constellation set with cardinality M=8.
1.
Find a set of suitable versors
2.
Sketch the block diagrams of optimal transmitter and receiver
3.
Fix a set of constellation points and compute their energy and an estimation of the symbol error
probability
二）Compute the average quantization error (mean square error) of a uniform quantizer for a source with the
following statistics

Fm(x)=3/4(1-x2)