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BER optimization for micro power receivers using quick and accurate system simulation

: Stücke, T.; Christoffers, N.; Kokozinski, R.; Kolnsberg, S.

Information Society Technologies -IST-:
14th IST Mobile & Wireless Communications Summit. Proceedings. CD-ROM : Dresden, Germany, 19 - 23 June 2005
Dresden, 2005
Mobile and Wireless Communications Summit <14, 2005, Dresden>
Conference Paper
Fraunhofer IMS ()
system simulation; model analog front-end; bit error rate; interference; non-linearity; Systemsimulation; Störung; nichtlineares System; Bitfehlerrate

The designer of practical receivers must deal with several problems in the analog as well as in the digital part. All these undesired effects have a large impact on the system performance, which is commonly described in terms of bit error rate (BER) or packed error rate (PER). In various textbooks, the theoretical relation between Eb/N0 and BER is only given for an assumed perfect receiver system. However, the theoretical equations are not capable to predict the performance of a system in presence of an interferer or non ideal components correctly. Instead, a system simulation is necessary. In this contribution, a model of the analog front-end (AFE) will be introduced, which describe several effects which can occur. This model can be used to determine and to verify specifications of the whole front-end or of its single stages. Simulation results are presented, which reveal that simple assumption made in common theory did not hold.