scope:

Introduction

WRC-2000 identified three different blocks of additional spectrum for IMT-2000, including the band 2 500-2 690 MHz. The band 2 500-2 690 MHz is currently allocated on a primary basis to several space services, the fixed service and the mobile service. This Report restricts its scope to the interference between the MSS and terrestrial component of IMT-2000.

This Report uses the relevant parameters needed in interference studies at the date of publication. It should be noted that the parameters assumed in this Report for the IMT-2000 terrestrial system are those of IMT-2000 CDMA direct spread/CDMA TDD (referred to hereafter in this Report as T-IMT-2000); no other terrestrial IMT-2000 radio interfaces have been considered because the current studies only consider that interface. The interference problems are investigated by deterministic and statistical approaches, for the different scenarios. This Report gives technical conclusions regarding the necessary guardbands between T-IMT-2000 and the MSS in the band 2 500-2 690 MHz. Since these conclusions are based on parameters correct at the date of publication and predicted deployment scenarios, it should be noted that any changes in parameters, for example, in the T-IMT-2000 emission masks, would require the conclusions of this Report to be reconsidered.