 kbps Puncturing level at code 5%/0% rate 1/3 : DCH / DCCH The UMTS Network and Radio Access Technology About four UE power classes have been defined (Table 5.5). The tolerance of the maximum output power is below the suggested level even when we would use multi- code transmission mode in the FDD and TDD modes. Other cases applying to the TDD mode from [2] are: Maximum output power refers to the measure of power while averaged over the useful part of transmit time slots with maximum power control settings. In multi-code operation the maximum output power decreases by the difference of the peak to average ratio between single and multi-code transmission. UE using directive antennas for transmission, will have a class dependent limit placed on the maximum Equivalent Isotropic Radiated Power (EIRP). Table 5.5 UE Power Classes Power Class Maximum output Tolerance (dB) Maximum output Tolerance (dB) power (dBm) power (dBm) +1/-3 +1/-3 +1/-3 +1/-3 +2/-2 5.3.1.2 Base Station Output Power In the TDD mode, BS output power, Pout, represents the one carrier mean power deliv- ered to a load with resistance equal to the nominal load impedance of the transmitter during one slot. Likewise, BS rated output power, PRAT, indicates the manufacturer declared mean power level per carrier over an active timeslot available at the antenna connector [4]. In FDD or TDD BS maximum output power, Pmax, implies the mean power level per carrier measured at the antenna connector in specified reference conditions. In normal conditions, BS maximum output power remains within +2 dB and -2dB of the manufac- turer's rated output power. In extreme conditions, BS maximum output power remains within +2.5 dB and -2.5 dB of the manufacturer's rated output power. 5.3.2 Frequency Stability Here frequency stability applies to both FDD and TDD modes. The required accuracy of the UE modulated carrier frequency lies within +0.1 ppm when compared to the car- rier frequency received from the BS. The signals have apparent errors as a result of BS frequency error a