Emissions Information Modulating Signal Description

0099-EX-PL-2005 Text Documents

Spectrum Telecom, Inc.

2005-04-05ELS_70090

STC Investment Fund I, Inc. dba Spectrum Telecom
FRN 0013137468
FCC Form 442
File No. 0099-EX-PL-2005

MODULATING SIGNAL DESCRIPTION

Applicant STC Investment Fund I, Inc. dba Spectrum Telecom (“Spectrum Telecom”)
proposes to the following parameters for its modulation.

Multi-carrier Synchronous CDMA
5MHz channels
10 - 500kHz sub-carriers
10ms TDD Timing
400khz Carrier Chip Rate
32 chips TCC, 64 chips Sync
QPSK, 8PSK, 16QAM Uplink, QPSK Downlink
Dynamic based on SNR evaluated every 10ms.
Transmission efficiency is 66.5% (includes LLC)
BER: 10 to the minus 3, before FEC
Forward Link: Beam Forming
Reverse Link: Spatial Filtering: Enhanced Nulling

-1-
9212485v1

Document Created: 2005-04-05 15:59:58
Document Modified: 2005-04-05 15:59:58

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