Bok T Sim

8059759, Nov 15, 2011

May 19, 2008

12/123406

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Ju Won Park - San Ramon CA, US
Tae Ryun Chang - Santa Clara CA, US

QUALCOMM Incorporated - San Diego CA

H04L 27/06

375340, 375260, 375316

Methods and apparatus for initially decoding a frame control header (FCH) in an orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) system in an effort to accurately determine the downlink frame prefix (DLFP) such that the remainder of an OFDM/A frame may be properly decoded are provided. Used, for example, when boosting factors applied in the transmitter to various elements of the OFDM/A frame and/or available pilots for the FCH are unknown, such methods may utilize a preamble channel estimate, the FCH pilots, or a combination thereof.

8161342, Apr 17, 2012

Dec 13, 2007

11/956278

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Je Woo Kim - Cupertino CA, US
Serguei A. Glazko - San Diego CA, US
Sameer Nanavati - Fremont CA, US
Ju Won Park - San Jose CA, US

QUALCOMM Incorporated - San Diego CA

G08C 25/02
G08C 25/00

714748, 714749, 714751

A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an OFDM/OFDMA receiver are provided. A combination of different types of HARQ combiners may be designed into the receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques. Furthermore, the HARQ combiner type may be dynamically selected through forward and reverse shifting between the different types of HARQ combining schemes in an effort to decrease the bit error ratio (BER) without saturating the HARQ buffer.

8194588, Jun 5, 2012

Dec 13, 2007

11/955645

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Je Woo Kim - Cupertino CA, US
Serguei A. Glazko - San Diego CA, US
Sameer Nanavati - Fremont CA, US
James Y. Hurt - San Diego CA, US

QUALCOMM Incorporated - San Diego CA

H04W 4/00

370328, 370252

A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.

8259866, Sep 4, 2012

Jan 4, 2008

11/969724

Tae Ryun Chang - Santa Clara CA, US
Jong Hyeon Park - San Jose CA, US
Ju Won Park - San Ramon CA, US
Bok Tae Sim - San Ramon CA, US
Chun Woo Lee - San Ramon CA, US
Je Woo Kim - Cupertino CA, US

QUALCOMM Incorporated - San Diego CA

H03D 1/00
H04L 27/06

375341, 375262, 375265, 375324, 375340

A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed.

8259867, Sep 4, 2012

Jul 18, 2008

12/176289

Qiang Huang - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Jong Hyeon Park - San Jose CA, US

QUALCOMM Incorporated - San Diego CA

H03L 27/06
H03D 1/00

375341, 375262, 375265, 375316, 714794, 714796

Certain embodiments provide methods and apparatus for decoding a string of data bits, encoded with a turbo encoding scheme, in a wireless communication system. One or more a-priori bit values corresponding to expected bit values at one or more identified bit locations in the string of data bits may be identified. One or more branch metrics used in a turbo decoding scheme may be manipulated to effectively remove decoding paths, from a collection of possible decoding paths, based at least on the identified one or more a-priori bit values, resulting in one or more remaining decoding paths. The string of data bits may be decoded by selecting a decoding path from the one or more remaining decoding paths.

8433002, Apr 30, 2013

Sep 28, 2011

13/247589

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Ju Won Park - San Jose CA, US
Tae Ryun Chang - Santa Clara CA, US

QUALCOMM Incorporated - San Diego CA

H04L 27/06

375340, 375229, 375260

Methods and apparatus for initially decoding a frame control header (FCH) in an orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) system in an effort to accurately determine the downlink frame prefix (DLFP) such that the remainder of an OFDM/A frame may be properly decoded are provided. Used, for example, when boosting factors applied in the transmitter to various elements of the OFDM/A frame and/or available pilots for the FCH are unknown, such methods may utilize a preamble channel estimate, the FCH pilots, or a combination thereof.

8537931, Sep 17, 2013

Jan 4, 2008

11/969330

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Tae Ryun Chang - Santa Clara CA, US
Je Woo Kim - Cupertino CA, US
Ju Won Park - San Jose CA, US
Chae Kwan Lee - San Jose CA, US
Sameer Nanavati - Fremont CA, US

QUALCOMM Incorporated - San Diego CA

H03K 9/00
H04L 27/00

375316, 375260, 375326, 375354

A synchronization and detection method in a wireless device may include performing coarse detection and synchronization with respect to a received signal. The synchronization and detection method may also include performing fine detection and synchronization for acquisition of the received signal. Results of the coarse detection and synchronization may be used for the fine detection and synchronization. The synchronization and detection method may also include performing tracking mode processing when the acquisition of the received signal has been achieved.

8548081, Oct 1, 2013

Feb 20, 2008

12/034420

Jong Hyeon Park - San Jose CA, US
Bok Tae Sim - San Ramon CA, US
Je Woo Kim - Cupertino CA, US

QUALCOMM Incorporated - San Diego CA

H04B 7/02

375267, 375260, 375262, 375347, 370203, 370208, 370210, 370252, 370328

In accordance with a method for diversity combining in an orthogonal frequency division multiple access (OFDMA) system, repetition diversity equalization and combining may be performed with respect to received OFDMA signals. In addition, receiver antenna diversity equalization and combining may be performed with respect to the received OFDMA signals. The repetition diversity equalization and combining and the receiver antenna diversity equalization and combining may be performed in accordance with a maximum ratio combining (MRC) scheme.