This paper proposes an efficient adaptive-rate scheme in conjunction with retransmission and code combining for transmission of ATM cells over mobile cellular networks. Wireless channel is characterized by block-fading Rayleigh distribution, where it is assumed to be invariant during each block of data and fading is assumed to be independent from one block to another. The proposed scheme provides a large dynamic range and yields very low cell-error rates at almost all channel conditions (low outage probability) with at most two retransmissions. This makes the scheme suitable for real-time applications, such as constant-bit-rate (CBR) applications intended for use in ATM circuit emulation mode . Furthermore, it saves a considerable amount of power as compared to fixed rate schemes with spectral efficiency and outage.
All Science Journal Classification (ASJC) codes
- Media Technology
- Hardware and Architecture
- Computer Networks and Communications