An efficient ATM cell transmission scheme over mobile cellular networks

This paper proposes an efficient adaptive-rate scheme in conjunction with r etransmission and code combining for transmission of ATM cells over mobile cellular networks. Wireless channel is characterized by block-fading Raylei gh distribution, where it is assumed to be invariant during each block of d ata 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-err or rates at almost all channel conditions (low outage probability) with at most two retransmissions. This makes the scheme suitable for real-time appl ications, such as constant-bit-rate (CBR) applications intended for use in ATM circuit emulation mode [9]. Furthermore, it saves a considerable amount of power as compared to fixed rate schemes with the same spectral efficien cy and outage.