  The problem of lossy transmission of correlated sources over memoryless
two-way channels (TWCs) is considered. The objective is to develop a robust low
delay and low complexity source-channel coding scheme without using error
correction. A simple full-duplex channel optimized scalar quantization (COSQ)
scheme that implicitly mitigates TWC interference is designed. Numerical
results for sending Gaussian bivariate sources over binary additive-noise TWCs
with either additive or multiplicative user interference show that, in terms of
signal-to-distortion ratio performance, the proposed full-duplex COSQ scheme
compares favourably with half-duplex COSQ.
