%CalcMsHeadRoom   txHeadRoom = CalcMsHeadRoom(lpTables, speeds) returns the single link
%                 headroom above average single link received Eb/No required for a MS
%                 with PC to live in fading.
%
%Inputs:
%   lPTables  : linkPerfTables for a channel, see e.g. pedALinkPerfTables.m	
%   speeds:     The speeds at which the headrooms are calculated.	
%Outputs:
%   txHeadRoom: The headroom required in the single link link budget for PC in dB  
%
%Author : Kari Sipil