ge. Assuming gain error and offset errors to be 10% of full scale, then each contributes a 1 dB reduction in dynamic range. The ADC must be backed off 1 dB to prevent input clipping and another 1 dB to account for limited dynamic range. Add 2 dB dynamic range margin. Chapter 4 Hardware architecture choices Fade margin. Fading plays an important role in the dynamic range, causing fluctuations of the signal level. This fading needs to be accounted for in: AGC-Slow fading (rain, night/day, blockage) Dynamic range-Fas fading (moving reflectors, wind, leaves). Fade margin requirements obviously depend highly on the RF conditions of the system we're dimensioning for and field test results can be found in literature. As a rule of thumb, assume 15 dB. Blocker interference in cochannels or adjacent channels. The industry standard number for this is about 10 dB but this number can be reduced if we're implementing a single- channel receiver or other favorable conditions apply (say, mmWave communications where blocker performance is less relevant due to the highly beamformed nature of the communication path). Sensitivity SNR is the required SNR by the (digital) baseband implementation as required to successfully decode the received signal. Performance depends on many factors: Channel model, code block size, Hybrid automatic repeat request (HARQ) retransmissions, MCS and coding rate, MIMO decoder algorithmic performance and SO on. Typically, this number is provided by Matlab models of the baseband implementation. We assume 25 dB required for successful decoding of a 64QAM signal. Processing gain from oversampling-sampling above the minimum Nyquist requirement. Oversampling is good both because of the processing gain as well as because it simplifies the requirements on the external (analog) baseband reconstruction filter. Assuming a useful RF signal bandwidth of (say) 100 MHz which means a baseband signal rate of 50 MHz I and 50 MHz Q in a baseband ADC/DAC, implying a baseband sample rate of ~ 100 MHz to adhere to the Nyquist 