Title :
Group-Mode Hopping for Collision Mitigation in Orthogonal Code-Hopping Multiplexing
Author :
Moon, Sung Ho ; Park, Suwon ; Kwon, Jae Kyun ; Kim, Junsu ; Sung, Dan Keun
Author_Institution :
LG Electron., Co., Ltd., Seoul, South Korea
Abstract :
Orthogonal code-hopping multiplexing (OCHM) is a statistical multiplexing scheme designed to increase the number of allowable downlink channels in code-division multiple-access (CDMA) systems. OCHM makes it possible to use orthogonal code resources more efficiently than the conventional dedicated codeword allocation/multiplexing schemes in CDMA2000 and wideband CDMA (WCDMA) systems. Collision-allowable hopping in the OCHM system yields a statistical multiplexing gain. However, collisions may degrade the bit error rate (BER) performance. A group-mode hopping scheme is proposed as a collision mitigation scheme for OCHM. The performance of the proposed scheme is evaluated using numerical analysis and simulations.
Keywords :
channel allocation; channel coding; code division multiple access; code division multiplexing; error statistics; orthogonal codes; telecommunication congestion control; wireless channels; BER; CDMA2000; OCHM; bit error rate; channel allocation; code-division multiple-access; collision mitigation; group-mode hopping; numerical analysis; numerical simulation; orthogonal code-hopping multiplexing; statistical multiplexing scheme; wideband CDMA; Code collision; code division multiple access (CDMA); group mode; hopping allocation; orthogonal code-hopping multiplexing (OCHM);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2009.2017547
