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Agilent LTE Reference Vector White Paper Introduction The third-generation Universal Mobile Wireless developers are under The breadth and flexibility of these Telecommunications System (UMTS), increasingly demanding schedules new emerging wireless standards based on Wideband Code-Division to develop products before wireless such as LTE and Mobile WiMAX pres- Multiple Access (W-CDMA), has been standards finalize to meet product ent significant challenges for FPGA deployed all over the world. To ensure shipment schedules. This introduces design. For example, LTE supports a that this system remains competitive product development risks to the number of modulation types (QPSK, in the future, the 3rd Generation baseband coding/decoding physical- 16QAM, 64QAM) with many different Partnership Project (3GPP) began layer design. configurations in the transport block a project in November 2004 to size, Resource Block (RB) alloca- define the long-term evolution of The physical-layer baseband design tion, different CRC lengths/types, UMTS cellular technology. The cycle often progresses in parallel etc. Traditional FPGA development specifications related to this effort with a wireless standard which is methodologies of writing/creating are formally known as the Evolved still rapidly evolving. Thus, algorithm independent test vector references UMTS Terrestrial Radio Access (E- definition is subject to the developer's (in addition to writing the actual HDL UTRA) and Evolved UMTS Terrestrial interpretation of the preliminary stan- code needed for the implementation) Radio Access Network (E-EUTRAN) dard, which may not yet be complete may become problematic in terms of but are more commonly referred to and may not yet be well-defined. the development overhead needed to by the project name LTE. The first Unfortunately, misinterpreting the generate the many test vectors sets version of LTE is documented in wireless standard on the baseband required to verify the many configura- Release 8 of the 3GPP specifications. implementation can result in costly tions supported by LTE and Mobile time delays in re-working designs and WiMAX. potentially missing critical time-to- Rapid evolution of new commercial market windows. A new approach is needed to wireless standards such as 3GPP facilitate rapid development and Long Term Evolution (LTE) poses Designing flexibility into hardw