This paper gives performance enhancement analysis of Multi spot Diffuse Link which is moreover called as quasi diffuse link. The capability of Multi spot Diffuse link can be enhanced by diminishing the value of receiver Field of View (FF.O.V ) which can reduce the Bit Duration (BB.D ), Mean Delay Spread ( αM.D.S ), and also the Root Mean Square Delay ( μ R.M.S.D.S ). However, it increases the corresponding Concentrator Gain or Channel Gain (C C.G ) and Bit Rate ( B B.R ). The Root Mean Square Delay ( μ R.M.S.D.S ) is a parameter used for estimating the value of time dispersive which is a property of multipath channel. The data rates are increased by decreasing the Mean Delay Spread ( αM.D.S ) and Delay Spread r. m. s( μ R.M.S.D.S ).Values of Mean Delay Spread ( αM.D.S ) and the Delay Spread r. m. s ( μ R.M.S.D.S ) are depend on FF.O.V of a receiver. FF.O.V of the receiver is related to the collective area of the photo detector and lens area. In this research work Delay Spread r. m. s ( μ R.M.S.D.S ), Mean Delay Spread ( αM.D.S ), Concentrator Gain or Channel Gain ( CC.G ), Bit Duration (BB.D ) and Bit Rate ( BB.R ) are computed at different values of FF.O.V.
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