Group-Mode Hopping for Collision Mitigation in Orthogonal Code-Hopping Multiplexing.
- Resource Type
- Article
- Authors
- Moon, Sung Ho; Park, Suwon; Kwon, Jae Kyun; Kim, Junsu; Sung, Dan Keun
- Source
- IEEE Transactions on Vehicular Technology. Sep2009, Vol. 58 Issue 7, p3830-3734. 5p. 1 Chart, 3 Graphs.
- Subject
- *ORTHOGONAL frequency division multiplexing
*CODE division multiple access
*ERROR rates
*WIRELESS communications
*DATA transmission systems
*NUMERICAL analysis
*RESOURCE allocation
*COMPUTER simulation
*CODING theory
- Language
- ISSN
- 0018-9545
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. [ABSTRACT FROM AUTHOR]