Ankit Gupta

US Patent:

20130315321, Nov 28, 2013

Filed:

Apr 4, 2013

Appl. No.:

13/856797

Inventors:

- Suwon-si, KR
Ankit Gupta - Richardson TX, US
Sudhir Ramakrishna - Plano TX, US
Kaushik Josiam - Dallas TX, US
Zhouyue Pi - Allen TX, US
Ying Li - Richardson TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04L 27/26

US Classification:

375260

Abstract:

To reduce the duration of a cyclic prefix used for a multiple input, multiple output (MIMO) communications channel, delay spread variations for different transmit/receive beam pair combination is estimated and used for fast beam switching and to support single user MIMO (SU-MIMO) even when the CP difference between two beams is large. Beam switching reference signals are employed to estimate delay spread exceeding current CP, and to support beam switching. CP covering sub-clusters within clusters for the MIMO channel are exploited to reduce the CP requirement and improve efficiency. Any one of a number of different CP durations may be selected for each different mobile station, using one of a finite set of subframe configurations for which the CP durations of different symbol locations within the subframe are predefined. Dynamically switching subframe configurations by the system accommodates high mobility.

Address:

16434 Redcrest Dr, Houston, TX 77095

Phone:

2817584092

VIN:

WBANW13578CN56105

Make:

BMW

Model:

5 SERIES

Year:

2008

Address:

3111 W Spg Dr APT F, Ellicott City, MD 21043

VIN:

KMHDU46D67U127003

Make:

HYUNDAI

Model:

ELANTRA

Year:

2007