《On 3G LTE TerminalImplementation–Standard》.pdf

On 3G LTE Terminal Implementation – Standard, Algorithms, Complexities and Challenges Jens Berkmann, Cecilia Carbonelli, Frank Dietrich, Christian Drewes, Wen Xu Infineon Technologies AG Am Campeon 1-12, 85579 Neubiberg, Germany fir st_name.last_name@ (Invited Paper) Abstract—Currently, 3GPP standardizes an evolved UTRAN come quite stable recently for a first implementation. (E-UTRAN) within the Release 8 Long Term Evolution (LTE) The air interface of E-UTRAN is based on OFDMA (Or- project. Targets include higher spectral efficiency, lower latency, thogonal Frequency Division Multiple Access) and MIMO higher peak data rate when compared to previous 3GPP air inter- (Multiple-Input Multiple Output) in downlink (DL) and on faces. The air interface of E-UTRAN is based on OFDMA and MIMO in downlink and on SCFDMA in uplink. Main challenges SCFDMA (Single Carrier Frequency Division Multiple Ac- for a terminal implementation include efficient realization of the cess) in uplink (UL) direction. Main challenges for a terminal inner receiver, especially for channel estimation and equalisation, implementation include efficient realization of the inner re- and the outer receiver including a turbo decoder which needs to ceiver, especially for channel estimation and equalisation, and handle data rates of up to 75 Mbps per spatial MIMO stream. We the outer receiver including a turbo decoder which needs to show that the inner receiver can