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Title:
A METHOD AND APPARATUS FOR SOFT INFORMATION TRANSFER BETWEEN CONSTITUENT PROCESSOR CIRCUITS IN A SOFT-VALUE PROCESSING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/112077
Kind Code:
A3
Abstract:
In one or more aspects, the present invention improves the efficiency of soft information transfer within a soft- value processing apparatus (10), by reducing in some sense the "amount" of soft information transferred between constituent processor circuits (12) within the apparatus (10), without forfeiting or otherwise compromising the transfer of "valuable" soft information. In one example, the soft values (18) produced by a constituent processor circuit (12-1 ) are identified as being reliable or unreliable according to a reliability threshold (28). Some or all of the unreliable values (24) are omitted from a soft value information transfer to another constituent processor circuit (12-2), or they are quantized for such transfer. The reduction in memory requirements for soft information transfer advantageously allows the use of lower power, less complex, and less expensive circuitry than would otherwise be required in the apparatus (10), which may be, as a non- limiting example, a Turbo receiver (70) in a wireless communication device (71).

Inventors:
KAMUF MATTHIAS (DE)
REIAL ANDRES (SE)
Application Number:
PCT/SE2012/000211
Publication Date:
November 07, 2013
Filing Date:
December 20, 2012
Export Citation:
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Assignee:
ERICSSON TELEFON AB L M (SE)
International Classes:
H03M13/45; H04L25/03; G06F13/00
Domestic Patent References:
WO2010043556A12010-04-22
WO2005062494A12005-07-07
WO2010101933A12010-09-10
Foreign References:
EP2328296A12011-06-01
EP1605624A12005-12-14
EP2202894B12011-11-02
Other References:
CHENG ET AL.: "Bit-Interleaved Turbo-Coded Noncoherent Orthogonal Modulation with Iterative Demodulation and Decoding: Capacity Limits and Convergence Analysis", CONFERENCE RECORD OF THE 38TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, vol. 2, 7 November 2004 (2004-11-07), PACIFIC GROVE, CA; UNITED STATES, pages 2020 - 2024, XP010781158
See also references of EP 2807747A4
Attorney, Agent or Firm:
ERICSSON AB (Lund, SE)
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