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In this work, a new approach of designing channel codes for partial band interference channels based on "Hidden Puncturing" is introduced. This technique does not require explicit estimation of the interferer. We investigate the performance of specially designed rate 1/2 convolutional codes with Viterbi decoding and rate 1/2 Turbo codes in an example scenario with partial band FM interference. For comparison, we also give results for Turbo codes for schemes with no interference. We show by means of simulations that for Gaussian as well as for a variety of multipath fading profiles, a significant Turbo channel coding gain compared to a conventional Viterbi system can be achieved. Thereby the performance of optimal combining, which requires optimal estimation of the interferer, can be approached very closely in various scenarios. [ABSTRACT FROM AUTHOR]

Efficient transmission methods for fading radio channels often require an iterative decoder. This is for example the case for systems using turbo codes. Receiver decoder iterations could potentially lead to a latency problem which impacts the performance of the medium access control protocol. In this paper, we present modifications based on the carrier sense multiple access with collision avoidance (CSMA/CA) medium access control (MAC) protocol to accommodate the increased latency in the iterative processing. One area of applications is wireless local area networks (WLANs) with high data rate. The simulation results performed in the IEEE 802.11a WLAN environment by replacing the 802:11a's convolutional coding with turbo coding demonstrate that the proposed algorithm provides a throughput gain over the conventional method. [ABSTRACT FROM PUBLISHER]