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Select Help > Open Examples... from the menus and type either the example name listed above or one of the keywords below.

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This example demonstrates:

            LTE FDD Downlink TX, compliant with 3GPP specifications.

            Specification document: TS 36.104, TS 36.211, TS 36.212


Configurable options include:

NFramesSweep: number of 10ms frames used in each sweep

FrameType: frame type and cycling preffix:

            - 0: Frame structure type 1 / Normal CP: FDD

            - 1: Frame structure type 2 / Normal CP: TDD

            - 2: Frame structure type 1 / Extended CP: FDD

            - 3: Frame structure type 2 / Extended CP: TDD• ModType

� MCS: modulation type used in data channels (QPSK, 16QAM, 64QAM)• and coding scheme (change in LTE_DL_TSIG block parameters). Entries with two options relate to the setting of parameter MTBST � the first entry corresponds to Table and the second one to Table

N_RB_DL: number or resource blocks used for transmission

• nAntennaPorts: number of antenna ports (1, 2 or 4)

Carrier Frequency (MHz)

TxOutLvlStart, TxOutLvlSpan, TxOutLvlStep (dBm): Define swept power of transmitted signal• UL_DL_Config: Uplink/Downlink Configuration for TDD (0, 1, 2, 3, 4, 5 or 6)

• PTS_Format: Pilot Time Slot Format for TDD (0, 1, 2, 3, 4, 5, 6, 7 or 8)

The test bench can be used to monitor:

The CCDF at the input and output of DUT


The TX signal spectrum at the input and output of DUT


EVM %rms vs. output power


The impact of phase noise on EVM

The impact of phase/amplitude and DC offset on EVM



N_RB_DL defines the channel bandwith as defined in the specifications (See Global Definitions for relationship between N_RB_DL and channel BW).