Linearity considerations for multi-standard cellular base station transmitters

Contemporary cellular base stations are becoming increasingly multi-standard for improved efficiency and manageability. Primary among prospective multi-standard base station deployments will be those that are reconfigurable but also capable of simultaneous transmission of several cellular signals. The simultaneous transmission of multiple cellular signals however poses a challenge for design, in particular the linearity requirements of the transceiver. In order to identify the feasibility of multi-mode transmission, we present an overview of transmitter non-linearity (OIP3) requirements for future multi-standard, multi-carrier, macro-cell base stations based on first-order approximations, highlighting the dynamic range issue. Simulation and measurement results are also presented.

[1]  R. Weigel,et al.  Linearity considerations of W-CDMA front-ends for UMTS , 2000, 2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017).

[2]  Qiang Wu,et al.  Linear RF power amplifier design for wireless signals: a spectrum analysis approach , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[3]  J.P. Martins,et al.  Intermodulation Distortion of Third-Order Nonlinear Systems With Memory Under Multisine Excitations , 2007, IEEE Transactions on Microwave Theory and Techniques.

[4]  R. S. Larkin.  Multiple-signal intermodulation and stability considerations in the use of linear repeaters , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.