Coding scheme for a wireless communication system

Details Coding scheme for a wireless communication system Coding scheme for a wireless communication system

2005-11-01

2005-11-01

Chin, Stephen (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S240110, C714S786000

Reexamination Certificate

active

06961388

ABSTRACT:
Coding techniques for a (e.g., OFDM) communication system capable of transmitting data on a number of “transmission channels” at different information bit rates based on the channels' achieved SNR. A base code is used in combination with common or variable puncturing to achieve different coding rates required by the transmission channels. The data (i.e., information bits) for a data transmission is encoded with the base code, and the coded bits for each channel (or group of channels with the similar transmission capabilities) are punctured to achieve the required coding rate. The coded bits may be interleaved (e.g., to combat fading and remove correlation between coded bits in each modulation symbol) prior to puncturing. The unpunctured coded bits are grouped into non-binary symbols and mapped to modulation symbols (e.g., using Gray mapping). The modulation symbol may be “pre-conditioned” and prior to transmission.

REFERENCES:
patent: 5197061 (1993-03-01), Halbert-Lassalle et al.
patent: 5812601 (1998-09-01), Schramm
patent: 6345377 (2002-02-01), Kroeger et al.
patent: 6484284 (2002-11-01), Smallcomb
patent: 6519732 (2003-02-01), Li
patent: 6571366 (2003-05-01), Doetsch et al.
patent: 6598200 (2003-07-01), Greenwood et al.
patent: 6601214 (2003-07-01), Hammons, Jr.
patent: 6707856 (2004-03-01), Gardner et al.
patent: 2002/0119781 (2002-08-01), Li et al.
patent: 2002/0122383 (2002-09-01), Wu et al.
patent: 2004/0028015 (2004-02-01), Fouilland et al.
patent: 0027085 (2000-05-01), None
P.B. Wolniansky et al. “V-BLAST: An Architecture for Realizing Very high Data Rates Over the Rich-Scattering Wireless Channel,” Proc. IEEE ISSE-98, Pisa, Italy, Sep. 30, 1998.
B. Hassibi et al. “High Rate Codes that are Linear in Space and Time,” Bell Laboratories, Lucent Technologies, Murray hill, NJ. Aug. 22, 2000 (pp. 1-55).
U.S. Appl. No. 09/205,511 entitled “Turbo Code Interlever Using Linear Congruential Sequence,” now allowed. Ling et al., QUALCOMM Incorporated, California (USA).
Matsuoka, et al. “Adaptive Modulation System with Variable Coding Rate Concatenated Code for High Quality Multi-Media Communication Systems” IEEE: 487-491 (Apr. 28, 1996).
Muneta, et al., “A New Frequency-Domain Link Adaptation Scheme for Broadband OFDM Systems” IEEE Vehicular Technology Conference 1(50): 253-257 (Sep. 1999).
Sampei, et al., “Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems” IEICE Transactions on Communications E77-8(9): 1096-1103 (Sep. 1, 1994).

Affiliated with

Also associated with

Rating

Coding scheme for a wireless communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coding scheme for a wireless communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coding scheme for a wireless communication system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3486591