Patent ID: 8295264

Claim:
A method of conducting soft combining of at least two received MBMS signals in a user equipment of a radio telecommunications network, the method including: demodulating, by a device of the user equipment the at least two received MBMS signals; converting floating-point slot data vectors to fixed-point slot data vectors for the at least two demodulated received MBMS signals; and soft combining the fixed-point slot data vectors derived from the at least two demodulated received MBMS signals, wherein the step of soft combining the fixed-point data vectors includes the step of: (a) combining a first fixed-point MBMS data vector with a second fixed-point MBMS data vector on a slot-by-slot basis, to generate combined fixed-point MBMS data vectors, wherein step (a) further includes the steps of: (1) buffering the first fixed-point MBMS data vector; (2) buffering the second fixed-point MBMS data vector; and (3) combining the buffered first and second fixed-point MBMS data vectors to produce a combined fixed-point MBMS data vector, wherein the method further includes scaling the buffered first and second fixed-point MBMS data vectors prior to combining them, wherein in the case that more than two MBMS data vectors are to be combined the method further includes generating a scaling factor relating to the combined fixed-point MBMS data vector, wherein the method further includes: for each MBMS signal to be soft combined, performing a floating-point to fixed-point conversion of a data stream on a slot-by-slot basis; predicting a slot scaling factor for a current slot on a basis of a proceeding slot; and using the predicted slot scaling factor to perform the floating-point to fixed-point conversion of the data stream for each slot, wherein the predicted slot scaling factor is generated on a basis of a previously converted slot.