User Manual

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Architecture

Nortel Networks Confidential

3–54

PE/DCL/DD/0063

411–9001–063

Standard 12.07/EN September 2000

GSM/BSS V12

RX logic function TX logic function

Transmission

unit

FPGA unit

Logic unit (e–LDRX)

Processing signal

function

(SPU)

Radio signaling

function

Power regulation

function

Management unit (AMNU)

Synchronization

function

Control and switching

management function

Time base

Radio unit (e–RDRX)

Figure 3–16 Logic unit (e–LDRX): functionnal architecture