scope:

Rationale for the present document

The rationale for the present document is twofold.

Firstly, the initiative to study the possibility to include improved receiving parameters such as selectivity and sensitivity in future releases of ETSI EN 302 571 [i.1] is based on recommendations given in ETSI EG 203 336 [i.5].

Secondly, the Harmonised Standard ETSI EN 302 571 [i.1] was first published when only a single technology was considered for Cooperative ITS communication.. Reformulation of (some of) the requirements defined in ETSI EN 302 571 [i.1] in a technology neutral manner is therefore strongly desirable, to address the various technologies existing today, and also future technologies.

Therefore, a new technical study item was proposed and approved: DTR/ERM-TG37-275, resulting in the present document.

Need for receiver performance requirements

The intention of article 3.2 of Directive 2014/53/EU [i.7] in relation to a receiver is explained in recitals 10 and 11 of the Directive, which states:

"...in the case of a receiver, it has a level of performance that allows it to operate as intended and protects it against the risk of harmful interference, in particular from shared or adjacent channels, and, in so doing, supports improvements in the efficient use of shared or adjacent channels.

Although receivers do not themselves cause harmful interference, reception capabilities are an increasingly important factor in ensuring the efficient use of radio spectrum by way of an increased resilience of receivers against harmful interference and unwanted signals on the basis of the relevant essential requirements of Union harmonization legislation."

Scope of the present document

The scope of the present document is to review requirements on the receiver sensitivity, adjacent channel rejection and the alternate adjacent channel rejection (hereafter referred to as "receiver requirements") as defined in ETSI EN 302 571 [i.1] with the aim:

• To analyse those receiver requirement limits and investigate if it is possible to tighten them, taking state-ofthe- art technologies into account.

• To assess the feasibility of defining such receiver requirements and associated tests for demonstrating compliance in a technology neutral manner.

• If not feasible, to specify alternative receiver requirements and associated tests for demonstrating compliance