Final report on link level and system level channel models - Winner

WINNER D5.4 v. 1.4
RX 1
RX module 1
RX 2
RX module 2
RX 3
ADC
PC
RX module 3
RX 4
RX module 4
Figure 5.6: Block diagram of the receiver chains.
The frequencies are first estimated per segments of several seconds following which channel estimation is
performed. Both the transmitter and both base-station are connected to GPS. The transmitter is on-off
keyed in order to facilitate fine temporal synchronization at the base-stations.
5.1.2.4 HUT channel sounder
The working principle of the HUT channel sounder is almost identical to the Elektrobit PropSound
channel sounder. The TX unit is a standalone unit synchronized with the RX unit in order to synchronize
the channel switching in both TX and RX end before performing time-multiplexed MIMO measurements.
The RX unit is used at the mobile end and is controlled through a personal computer. The sounder has 2,
5 and 60 GHz frequency ranges. The key features of the HUT 5 GHz channel sounder, whose results are
used in WINNER, are presented in Table 5.5.
Table 5.5: Key features of HUT 5 GHz channel sounder.
Feature Value Note
Frequency range
5.25– 5.35 GHz
Max. number of transmitter channels
(Tx-antennas)
Max. number of receiver channels (Rxantennas)
Maximum RF power in antenna input
(after TX switch)
Chip rate
Sequence length (defines maximum
excess delay)
Propagation delay resolution
Max. meas. data storage rate
32 Limited by the switch
32 Limited by the switch
4 W
Up to 60 Mchips/s
255
17 ns ( = 1 / chip rate)
2*20 Mb/sec
5.2 Measurement campaigns
Several measurement campaigns have been designed and performed in WINNER WP5 during 2004 to
obtain parameters for the WINNER channel models. The following sections give overviews of the
campaigns.
5.2.1 Scenario A1
5.2.1.1 EBIT campaign
Measurements conducted during 2004 for A1 were performed at two centre-frequencies, 2.45 and 5.25
GHz at Elektrobit premises in Oulu, Finland. The measurement results were included in the deliverable
D5.3 [D5.3].
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