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A Study Of Umts Turbo Codes Across Space Time Spreading Channel With The Case Of M = 1 And M = 2, Ibrahim S. Raad, Peter Vial, Tadeusz A. Wysocki
A Study Of Umts Turbo Codes Across Space Time Spreading Channel With The Case Of M = 1 And M = 2, Ibrahim S. Raad, Peter Vial, Tadeusz A. Wysocki
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
The study presented in this paper is that of Universal Mobile Telecommunications Systems (UMTS) Turbo Codes across Space Time Spreading channel with one transmitter antenna, one receiver (m = 1) and two transmitter antennas and one receiver (m = 2) to see to what extent the bit error rate (BER) can be improved. Using the Max-log decoding algorithm and 12 iterations it is shown in the simulation results that an extra 5 dB is achievable.
Space Time Spreading With Modified Walsh-Hadamard Sequences, P Vial, B. J. Wysocki, I Raad, Tadeusz Wysocki
Space Time Spreading With Modified Walsh-Hadamard Sequences, P Vial, B. J. Wysocki, I Raad, Tadeusz Wysocki
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
Previous work has shown that the performance of a Space Time Spreading (STS) system using walsh codes with two transmit antennas at the Base Station (BS) is degraded in the presence of mutual interference from adjacent sectors in the same cell. In this paper we use Modified Walsh-Hadamard sequences exhibiting improved cross-correlation performance, which potentially mitigates the effects of MA1 (Multiple Access Interference). The presented study also looks at variation of sets of different Modified Walsh- Hadamard codes being used by the adjacent interferer, with a hundred randomly selected pairings being chosen, as well as the case where one set …