TR 37.808
Passive Intermodulation (PIM) Handling
for Base Stations (BS)

V12.0.0 (Wzip) 2013/09 27 p.

full Table of Contents for TR 37.808 Word version: 12.0.0

Scope p. 5

References p. 5

Definitions and abbreviations p. 5

3.1	Definitions p. 5
3.2	Abbreviations p. 5

General p. 6

4.1	Work item objective p. 6

Scenarios for PIM p. 6

5.1

Site scenarios p. 6

5.2

Single-band scenarios p. 7

5.3

Multiband scenarios p. 9

5.3.1

Dual band HSDPA, LTE inter-band CA and MB-MSR p. 9

5.4

Other scenarios p. 9

PIM generation from site infra-structure p. 10

6.1

Mechanism for PIM generation p. 10

6.1.1	Theoretical background for 3rd order Passive InterModulation (PIM) p. 11
6.1.2	Theoretical bound for higher order non-linearity p. 14
6.1.3	Theoretical background for spread spectrum signals p. 14

6.2

Measurements p. 15

6.2.1	Measurement configuration p. 15
6.2.2	Two tone measurement results p. 15
6.2.3	Spread spectrum measurement results p. 18
6.2.4	Measurement results for IM5 and IM7 p. 19
6.2.5	Discussion of the measurement results p. 20

PIM impact on receiver performance p. 20

Deployment aspects and counter measures for PIM p. 22

8.1	Impact of site infrastructure p. 22
8.2	PIM counter measures p. 23
8.3	Maintenance activities p. 23

New PIM-related RF requirements p. 24

Testing aspects p. 25

10.1

Measurement of PIM products in networks p. 25

10.1.1	External PIM test equipment p. 25
10.1.2	Integrated PIM measurement p. 26

Summary and conclusion p. 26

Change History p. 27