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Technology Stocks : Qualcomm Incorporated (QCOM)
QCOM 159.42-1.2%Jan 16 3:59 PM EST
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To: Craig Schilling who started this subject4/15/2002 1:35:36 PM
From: Ruffian  Read Replies (1) of 152472
 
Bell Labs decoder supports voice, data on UMTS
basestations

By Patrick Mannion
EE Times
April 15, 2002 (12:14 p.m. EST)

MANHASSET, N.Y. — Bell Labs, the research
arm of Lucent Technologies, said it has
developed a baseband processor for UMTS
basestations that supports voice and data
signals within a single channel. Bell Labs
designed the Unified Turbo/Viterbi Channel
Decoder for use with Lucent's Flexent
OneBTS basestations and said it offers up to
10 percent capacity improvement and lower
handset power consumption than
competitive solutions.

The chip has built-in support for the 3GPP
turbo interleaving algorithms,
bit-error-estimation and first-level 3GPP
channel de-interleaving, which reduce the
need for host processor support, according
to Lucent. The decoder supports any mix of
voice and data services needed for Universal
Mobile Telecommunications Systems
networks.

Tests performed by Lucent show that the
chip can decode 2-Mbit/second UMTS data
streams with 10 turbo iterations using the
log-MAP algorithm with variable-width
log-correction tables. The decoder
innovation provides up to a 12 percent
increase in link sensitivity over other
available max-log-MAP solutions, said
Lucent.
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