Andrew Wireless Innovations Group BCP-TFAM26 Users manual

PLU S

User Manual

MN024-04

MN024-04

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 Copyright Tekmar Sistemi Srl

Tekmar Sistemi Srl

n Andrew Company

Via De Crescenzi 40
48018 Faenza RA
Tel: [phone]
Fax: [phone]
www.andrew.com

This publication is issued to provide outline information and is not aimed to
be part of any offer and contract.
The Company has a policy of continuous product development and
improvement and we therefore reserve the right to vary information quoted
without prior notice.

System and Customer care is available world-wide through our network of
Experts.

The company is certified ISO 9001 and ISO14000.

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User Manual

INDEX

1. Introducing Britecell Plus 5

1.1 The Features 6

1.2 Britecell Plus brief Description 6

1.3 Britecell Plus Features 7

1.4 Britecell Plus typical Applications 8

2. Equipment Overview 10

2.1. The Remote Unit TFAxxx and relevant TKA installation kit 11

2.2. The Britecell Plus Master Unit 12

2.3. Block diagrams 15

3. Remote Unit TFAxxx 18

4. Master Unit 32

4.1. 19” Subrack TPRNxy 33

4.2. Local Unit TFLN 47

4.3. 2-way splitter TLCN2 57

4.4. 4-way splitter TLCN4 60

4.5. RF diplexer TLDN 63

4.6. RF triplexer TLTN 66

4.7. RF duplexer THYN 69

4.8. RF attenuator TBSI 72

4.9. Digital RF attenuator TDI 75

4.10. Power limiter TMPx-10 79

5. Optional equipment and accessories 82

5.1. WLAN interface TWLI 83

5.2. Amplifier TWANx 86

5.3. WLAN booster TFBWx 89

5.4. Remote power supply TRS/TRSN 93

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1. Introducing
Britecell Plus

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1.1 The Features

Britecell Plus is an innovative platform designed in order to provide an effective and flexible
coverage to a large variety of indoor scenarios.

Thanks to its high modularity, its low power consumption, and its full-transparency to protocols and
modulation formats, Britecell Plus is the perfect plug&play solution to distribute any wireless
standard (including GSM, GPRS, EDGE, CDMA, WCDMA, and WLAN IEEE 802.11b) to the in­building environments requiring reliable and interference-free communications, as well as high
traffic capacity and maximum flexibility about future expansions.

These unique features make the Britecell Plus platform suitable also for applications to critical areas
experiencing difficulties in establishing and keeping phone calls, while its compact design always
guarantees a minimum aesthetic impact.

1.2 Britecell Plus brief Description

Britecell Plus is a Distributed Antenna System (DAS) based on the Radio-over-Fibre (RoF)
technology, and capable of carrying wireless mobile signals through the 400 MHz- 2500 MHz
frequency range regardless of their protocol and their modulation format.

The system has two basic components, a Master Unit and a Remote Unit. The Master Unit is made
of one or more subracks typically connected to the BTS (Base Tranceiver Station) through either a
repeater (RF interface) or a coaxial cable.

Each Remote Unit is connected with a dedicated pair of single-mode optical fibres (one for UL and
one for DL) to the Master Unit. These optical fibres work on 1310 nm wavelenght and provide low
losses and almost unlimited bandwidth, available for future system developments.

Britecell Plus is a modular system whose basic components are:

• one Master Unit made of one or more subracks, each providing 12 module slots. Each slot
can host either an active or a RF passive device (chosen among the wide range of Britecell
Plus options), in order to meet the planned design requirements;

• a variable number of Remote Units (TFAxxx), whose function is feeding the antenna passive
network;

• a proper number of indoor antennas, suitable to provide radio coverage to the area. Britecell
Plus is fully compatible with any type of indoor antennas;

• the optical cables required to connect the 19” subracks to the TFAxxx.

12

BTS

RF interface

TFLN

Two F.O. per RU

1

REMOTE

UNIT

4

1

Fig. 1: Britecell Plus system block diagram.

User Manual

1.3 Britecell Plus Features

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The following lines report a brief summary of Britecell Plus main features:

• multiband 2G, 2.5G and 3G – 802.11b WLAN compatible: Britecell Plus is completely
transparent to any transmission protocol and modulation format, and it can distribute any 2G,

2.5G, 3G wireless standard. In addition, a special option allows to carry also the WLAN
(802.11b/g) service over the same infrastructure;

• modular configuration for flexible design: by properly setting some parameters like the
amount of RUs and the antenna locations, the Britecell Plus architecture can follow the
environment specific features in order to obtain the most effective radio-coverage of the
indoor area. The modularity of the system allows easy modifications for future growth and
increasing traffic;

• easy to install: the intelligent plug & play Britecell Plus system includes an Automatic Gain
Control (AGC), that eliminates system gain variations regardless of optical loss. This avoids
the need for field adjustments, thus reducing design, installation and optimization time.

• low-power consumption: establishing a “quasi line-of-sight propagation” towards all
mobile phones inside the area, Britecell Plus works with extremely low power levels. Low
power levels have two great advantages: 1) allow mobile phones to work at lower power
levels, thus limiting the radiated emissions and increasing their battery life; 2) allow a better
control of interference effects between adiacent cells.

• central supervision functions: all individual alarms of Britecell Plus system are stored in an
internal flash memory, and available to both local and remote connections. Detailed alarm
information is provided by special software (i.e. by Supervision or Maintenance software
tools) running on a locally connected host, as well as any information about alarm status and
alarm history is available to remote connections via TCP/IP protocols, SNMP agent, or
HTTP servers. This alarm information is visible also by means of LEDs present on the front
panels of both the MU and the RUs;

• multiple-carriers system: there are no restrictions on the number of carriers that the
Britecell Plus can convey. Obviously, the more carriers per service, the less power per
carrier;

• remote power supply: in case mains cannot be used for the Remote Units, Britecell Plus
offers a centralised power supply option, which distributes both a DC low-voltage (- 48)
power and the optical signals through a composite fibre optic/copper cable;

• wide variety of RF passive devices: the connections between the DAS and the local BTSs
can be arranged so as to get the best fit for customers needs. Britecell Plus equipment
provides RF splitters/combiners, multi-band duplexer/triplexer, attenuators, couplers for
UL/DL paths, thus allowing the maximum design flexibility

• high reliability: the MTBF (Mean Time Between Failure) is estimated to be 300000 hours.

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1.4 Britecell Plus typical Applications

Thanks to its unique features Britecell Plus is the ideal solution to set up radio coverage in may
situations:

• Multi operator shared infrastructure: each mobile operator has its own carriers, which
must be transported without affecting the others. Britecell Plus is capable of transmitting
multiple carriers simultaneously, while providing an independent level adjustment for each
of them, ensuring maximum performance and reducing infrastructure costs

• High rise buildings: RF signals from surrounding macrocells or external BTSs are usually
quite strong inside high rise buildings, and cause so much interference that indoor mobile
communications often become impossible. By strategically placing antennas along the
exterior walls of the building, the signal to noise ratio can be optimised. This interference
control solves many problems, such as the “ping pong” effect that sometimes is experienced
when a mobile frequently changes from an indoor to an outdoor coverage.

• Exhibition, conventions, and shopping centres: the critical point of these environments is
due to the high traffic loads, which are furthermore highly variable. Thus, the main goal to
achieve is setting up a radio coverage which could effectively manage these variable traffic
loads, with neither undervalued nor overvalued infrastructure expenses. A unique feature of
Britecell Plus is that RF frequencies can be allocated quickly when and where they are
needed, thus reducing the implementation cost. This makes Britecell Plus the proper solution
also for temporary or last minute requests (such as conferences).

• Airports: they require modular and flexible radio coverage, in order to meet present needs
while foreseeing future expansions. Britecell Plus can manage high traffic loads providing
high quality with minimum environmental impact, while its modularity allows future
extensibility.

• Corporate Building: inside a corporate building, difficult mobile communications may limit
business transactions. These environments are often complex and densely populated with
specific requirements to be fulfilled: high traffic capacity, maximum expectations on Quality
of service, full compatibility with wireless standards and future expandability. Britecell Plus
guarantees high quality radio coverage under all conditions, while maintaining maximum
flexibility in managing any traffic condition.

• Subways and Highly Dense Metropolitan Areas: These areas are distinguished by large
distances, and may require that RUs are placed far away from the BTSs. Britecell Plus
guarantees the signal integrity at distances up to 3 km, and through the wideband
interconnect link option distances of 20 km can be reached. Moreover, these environments
need gradual investments, because initially operators provide radio coverage only in the
busiest areas, and then extend it in order to reach complete coverage. The modularity of
Britecell Plus helps operators to gradually expand the system. Some large cities often need to
set up seamless and reliable radio systems for emergency services. The required RF
infrastructure needs to be unobstrusive and environmental friendly; this can be achieved
using a Britecell Plus DAS. When redundancy is required, two interleaved Britecell Plus
systems can be used, management and supervision for these systems can be remotely
established by means of an external modem and an open protocol such as SNMP.

1.5 Health and Safety Warnings

IMPORTANT NOTE: To comply with FCC RF exposure compliance requirements, the following

antenna installation and device operating configurations must be satisfied: A separation distance of
at least 35 cm must be maintained between the antenna of this device and all persons. RF exposure
compliance may need to be addressed at the time of licensing, as required by the responsible FCC

User Manual